I have been a massive fan of Supernatural since it all started way back in 2005, I have some personal favourite episodes that I would like to share with you guys as we are soon marking the 300 episode milestone. In season order here are some of my favourite episodes from seasons 1-7
Season 1: focuses on brothers Sam and Dean Winchester as they track down their father, John, who is on the trail of the demon who killed their mother and Sam’s girlfriend. During their travels, they use their father’s journal to help them carry on the family business—saving people and hunting supernatural creatures. Jared Padalecki and Jensen Acklesstar as Sam and Dean, with Jeffrey Dean Morgan recurring as their father, John, and Nicki Aycox as the demonic Meg Masters.
1. The Pilot: The Supernatural pilot introduced the characters of Sam (Jared Padalecki) and Dean Winchester (Jensen Ackles), brothers who travel throughout the country hunting supernatural creatures, as they battled a ghostly Woman in White (Sarah Shahi) while searching for their missing father (Jeffrey Dean Morgan).
2. Bloody Mary: When a man is killed—his eyeballs having exploded—after his daughter chants “Bloody Mary” three times in front of a mirror, Sam and Dean head to Toledo, Ohio, to investigate. They learn that Bloody Mary (Jovanna Huguet) is the ghost of a young woman who was murdered after her eyes were cut out, and her spirit trapped within the mirror that she died in front of. With the mirror now for sale in an antique store in the town, Bloody Mary has begun to target those nearby who secretly feel guilt over another’s death. The brothers must find a way to stop her after a young girl (Marnette Patterson) inadvertently becomes her next target.
3. Hook Man: Sam and Dean head to Ankeny, Iowa to investigate the brutal death of a college student, and the victim’s girlfriend Lori (Jane McGregor) says that the attacker was invisible. More attacks occur, with the victims seemingly connected to the girl. The brothers believe that the killer is the Hook Man, and research indicates that it is the vengeful spirit of Jacob Karns, a preacher who murdered 13 prostitutes in 1862 with the hook that replaced his lost hand and was later put to death for his crimes.
John calls Sam and Dean, telling them he is hunting the thing that killed their mother and it is a demon. However, instead of letting them help, he tells them to investigate the disappearances of young couples in rural Burkitsville, Indiana, Sam reveals to Dean that he would rather track down their father, prompting the two to angrily separate. As Sam meets a fellow hitchhiker named Meg Masters (Nicki Aycox), Dean starts the investigation and saves a traveling couple from a living scarecrow.
5. The Benders:
Sam and Dean head to Hibbing, Minnesota, where a young boy witnesses a man disappear. While investigating, Sam is also abducted. Dean pretends to be a police officer in search of his brother, and teams up with Deputy Kathleen Hudak (Jessica Steen). Although she soon learns Dean’s true identity, she allows him to continue investigating with her, as her own brother went missing in the same manner three years before.
6. Dead Man’s Blood:
When an old vampire hunter is targeted by a group of vampires, he tries to attack them with an old Colt pistol, but is killed before he can fire a shot. Returning to the nest, the vampire Kate (Anne Openshaw) gives the Colt to her mate, the leader Luther (Warren Christie). When Dean recognizes the murdered hunter’s name in the newspaper, he and Sam head to Boulder, Colorado, and discover a letter addressed to their father, who suddenly returns.
7. Devil’s Trap After learning that their father has been captured, the brothers go to family friend and fellow hunter Bobby Singer (Jim Beaver) for help.
Season 2: The season focuses on protagonists Sam (Jared Padalecki) and Dean Winchester (Jensen Ackles) as they track down Azazel, the demon responsible for the deaths of their mother Mary and father John. They attempt to discover the demon’s plan for Sam and other psychic children—young adults who were visited by Azazel as infants and given abilities, and whose mothers often then died in a fire. During their travels, they use their father’s journal to help them carry on the family business—saving people and hunting supernatural creatures.
8. Croatoan: After Sam has a premonition of Dean killing a defenseless man, the brothers head to Rivergrove, Oregon to investigate. There, Sam notices “CROATOAN” carved into a pole, reminding him of the lost colony of Roanoke. They soon find that all forms of communication have been shut down, and extremely violent townspeople are blocking the roads out.
As Molly McNamara (Tricia Helfer) and her husband drive along a highway, a man suddenly appears in the road. They crash in an attempt to avoid him, and Molly later wakes up alone in the car. The man reappears and chases after her, but Molly flags down a car driven by the Winchesters. She tries to show them the wreck, but the car has disappeared. While later driving to the police, they are confronted again by the man, but Dean drives through him, causing the ghost to dissipate. The brothers reveal that what has been chasing her is the vengeful spirit of Jonah Greeley (Winston Rekert), who died on that roadway years earlier and now kills drivers on the anniversary of his death.
10. Folsom Prison Blues: Following a tip from their father’s marine buddy, Deacon, Sam and Dean deliberately get themselves arrested in Arkansas to investigate a string of murders in a recently reopened cell block.
11. All Hell Breaks Loose (Part One) Sam is abducted by Azazel and taken to an abandoned town. Also placed there are Azazel’s other psychic children—Andy Gallagher and Ava Wilson, as well as newcomers Lily (Jessica Harmon) and Jake Talley (Aldis Hodge). As Dean and Bobby head to the Roadhouse for help and find it burned to the ground.
12. All Hell Breaks Loose (Part 2) Dean, devastated by Sam’s death, sells his soul to a Crossroads Demon (Ona Grauer) in exchange for Sam’s resurrection, and is given only one year before collection is due. Ellen later arrives at Bobby’s home, and gives them a map of Wyoming that Ash had left in the Roadhouse’s safe. Research reveals that Samuel Colt—creator of the Colt gun—created a giant devil’s trap using railway lines.
Season 3: Traveling throughout America, protagonists Sam (Jared Padalecki) and Dean Winchester (Jensen Ackles) use their father’s journal to help them carry on the family business—saving people and hunting supernatural creatures. The season begins with the brothers tracking down the demons released from Hell in the previous season finale. They become allies with a demon named Ruby (Katie Cassidy), who claims to know a way to release Dean from his demonic pact—he had sold his soul to a demon and was given a year to live in exchange for Sam’s resurrection—and wants to protect them from the new demonic leader Lilith. As Dean’s deadline approaches, their efforts are further hindered by Bela Talbot (Lauren Cohan), a professional thief of occult items who is often at odds with the Winchesters.
13. The Magnificent Seven: The third season begins with brothers Sam (Jared Padalecki) and Dean Winchester (Jensen Ackles) bracing themselves for the possibility of an apocalyptic war. They realize that hunting down the hundreds of spirits that escaped from the Devil’s Gate—a doorway to Hell briefly opened at the end of the previous season—will be an enormous task. With only a year left to live—he made a demonic pact to resurrect Sam—Dean decides to live life to the fullest and exhibits a carefree attitude that troubles Sam, who is trying to find a loophole. Friend and fellow hunter Bobby Singer (Jim Beaver) informs the brothers about a supernatural sighting in Nebraska, which turns out to be demonic manifestations of the Seven Deadly Sins.
14. Bad Day At Black Rock: Kubrick (Michael Massee) visits fellow hunter Gordon Walker (Sterling K. Brown) in prison, and is told that Sam must die due to his inhuman nature. Elsewhere, the brothers are alerted to a break-in at one of their father’s storage rooms in Buffalo, New York, where thieves have stolen a rabbit’s foot. Sam and Dean use security footage to track them down and retrieve the item. However, Bobby informs them that the foot is cursed. Anyone who touches it—Sam already has—is granted good luck, but will die within a week if the foot is lost.
15. Bedtime Stories: Sam and Dean investigate a small town that has been plagued by strange murders whose scenes resemble those of fairy tales; Sam summons the Crossroad Demon (Sandra McCoy).
16. A Very Supernatural Christmas: When a being dressed as Santa Claus begins killing people after dragging them up the chimney, the Winchesters head to Ypsilanti, Michigan to investigate. Sam suspects that an evil version of Santa—many world lores tell of those who punish the wicked during Christmas—is at work; Dean wants to celebrate Christmas because it will be his last chance, while Sam does not for the same reason.
17. Mystery Spot: After a tragic shooting while investigating a man’s disappearance, Sam awakens to find that he is living the same day over again.
18. Jus In Bello: Sam and Dean break into Bela’s apartment to get the Colt back, but she has tipped off agent Henrickson regarding their whereabouts, and they are arrested. A horde of Demons take over the local town and attempt to storm the police station.
19. Time Is On My Side: Sam convinces Dean to go to Erie, Pennsylvania, to investigate a possible zombie, but they instead learn that the culprit behind recent organ thefts is Doc Benton (Billy Drago). Having abandoned his work in 1816 to follow his obsession of finding the key to eternal life, he drugs people and harvests their internal organs to replace his. Sam wants to use Doc Benton’s research to find a way to extend Dean’s life. Dean instead leaves for Canaan, Vermont, to speak with retired hunter Rufus Turner (Steven Williams).
20. No Rest For The Wicked: Thirty hours before Dean’s deal with the crossroads demon is up, Sam, Dean and Bobby search for Lilith; in a battle to the death, Sam, Dean and Bobby take on Lilith and all her demons in an attempt to save Dean’s life.Thirty hours before Dean’s deal with the crossroads demon is up, Sam, Dean and Bobby search for Lilith; in a battle to the death, Sam, Dean and Bobby take on Lilith and all her demons in an attempt to save Dean’s life.
Season 4: This season focuses on brothers Sam (Jared Padalecki) and Dean Winchester (Jensen Ackles) encountering angels for the first time in their lives as hunters of the supernatural; this marks the introduction of eventual series regular, the angel Castiel (Misha Collins). The angels intervene to rescue Dean from Hell and bring him back to life after he was trapped there in the third season finale “No Rest for the Wicked”. They explain that they have arrived on Earth for the first time in thousands of years in order to prevent demons from freeing the fallen angel Lucifer from Hell, as Lucifer would then cause the Apocalypse. The demons are led by the Winchesters’ enemy, and Dean’s murderer, Lilith. However, it becomes increasingly clear that something is wrong with Heaven and that the angels have their own agendas. Despite an initially happy reunion, tension grows between Sam and Dean because Dean fears Sam’s growing demonic powers and distrusts Sam’s returning demonic ally Ruby (Genevieve Cortese).
21. Lazarus Rising: Four months after he was ripped apart and his soul dragged to Hell by a hellhound, Dean Winchester inexplicably wakes up underground in a coffin, completely whole and intact except for a burn in the shape of a handprint on his right arm. He manages to escape his coffin, but is ambushed by an unknown entity. Believing that Sam made a deal with a demon to bring him back, he tracks Sam down near where he had been buried, but Sam is just as surprised at Dean’s resurrection as he himself, having tried and failed to bring Dean back.
22. Monster Movie: The Winchester brothers find themselves at a local Oktoberfest celebration in Canonsburg, Pennsylvania, investigating a series of suspicious murders being perpetrated by what locals describe and are seen by the viewer in campy scenes filmed in black and white as monsters from classic 1930s horror movies.
23. Yellow Fever: The boys head to Rock Ridge, Colorado, a town where a man died of a heart attack at 44 years of age with no symptoms. Research indicates the man died of “ghost sickness”, which infects Dean. The illness causes first a general anxiety that builds into deadly fear.
24. It’s The Great Pumpkin, Sam Winchester: A few days before Halloween, Sam and Dean launch an investigation into two mysterious deaths in a small town. The brothers find hex bags and deduce that a witch is sacrificing people to summon a dangerous demon named Samhain. Castiel arrives in town and tells Sam and Dean that the freeing of Samhain is one of the seals that will lead to freeing Lucifer. To protect the seal by killing the witch, Castiel brings a specialist angel named Uriel (Robert Wisdom) to smite the entire town to be sure of killing the witch, but is convinced by Dean not to and to give the Winchesters a chance to stop the witch.
25. Wishful Thinking: Sam and Dean investigate Concrete, Washington, a small town where the wishing well really works. A teddy bear comes to life, a boy who is always bullied gets super strength, someone wins the lottery, and the town geek gets a hot girlfriend. The brothers realize that while everyone is happy now, the end result will be disastrous because the magic will inevitably go wrong.
26. Family Remains: Dean and Sam investigate the appearance of a ghost in an abandoned house, but things get more complicated when a family moves in.
27. Lucifer Rising:
When the last few of the 66 Seals are broken by Lilith’s minions, Sam and Dean prepare for the big and probably futile fight in very different ways. Sam joins Ruby on a final attempt to kill Lilith before Lucifer rises, while Castiel and Zachariah tell Dean that it’s time to play his part in stopping Lucifer.
Season 5: The season follows Sam and Dean as they set out to take down Lucifer, whom Sam had inadvertently released from Hell at the end of the previous season.
28. Sympathy For The Devil: With the accidental freeing of the fallen angel Lucifer in the climax of the previous season finale by Sam Winchester (Jared Padalecki), the Apocalypse has started. An unknown force whisks Sam and his brother Dean (Sam Winchester (Jared Padalecki), the Apocalypse has started. An unknown force whisks Sam and his brother Dean (Jensen Ackles) from the place that Lucifer has started his destructive rise, and transports them safely onto an airplane passing overhead. They seek information from the prophet Chuck Shurley (Rob Benedict), learning that their angelic ally Castiel (Misha Collins) has been killed for helping them, but he is unable to tell them much else because he is being watched by angels, who are working against the Winchesters to bring on the Apocalypse.
29. Good God, Y’ALL!: Castiel borrows Dean’s pendant so that he can locate God. Bobby sends Sam and Dean to respond to a frantic call from his friend Rufus Turner (Steven Williams), who is in River Pass, Colorado, a town swarming with demons. They meet their old friend Ellen Harvelle (Samantha Ferris), whose daughter Jo has also gone missing.
30. The End: Sam calls Dean late at night and wants to team up again in the battle of the Apocalypse, but Dean declines. Dean awakens five years in the future where the Croatoan virus has devastated the world. He learns from Zachariah that it is the result of Dean’s refusal to become Michael’s vessel. Dean discovers a group of survivors led by his future self, who plans on confronting Lucifer in a final showdown.
31. Changing Channels: While investigating a homicide in Wellington, Ohio that was apparently executed by the Incredible Hulk, Sam and Dean suspect it is the work of the Trickster, but when they go to a warehouse location to try to stake him, they find themselves as characters in a television show, and must survive a sequence of events across different shows including a sexy medical drama, a Japanese game show, a sitcom, and a police procedural, all of which attempt to have the two accept their roles as vessels. They are able to stake the Trickster, but the scenario continues as Sam is transformed into their Impala and has to act like K.I.T.T. in Knight Rider.
32. Abandon All Hope: Castiel finds Crowley (Mark A. Sheppard) and the brothers and Jo break into his mansion. To their surprise, Crowley shoots his henchmen, and gives Sam and Dean the Colt on the condition that they use it to kill Lucifer, as he believes that eventually Lucifer will kill his demons after he destroys humanity. Sam, Dean, Ellen, Jo and Castiel head to Carthage, Missouri, which appears deserted, except that Castiel sees it is full of reapers. When Castiel investigates, Lucifer captures him and tries to persuade him to join his side.
33. Dead Men Don’t Wear Plaid: Sam and Dean investigate Bobby’s hometown of Sioux Falls, South Dakota where the dead are rising from the grave, but instead of attacking humans they are happily reuniting with their families. The brothers turn to Bobby for help, but he tells them not to worry about it and to leave town. Suspicious, Dean investigates further and comes face to face with Bobby’s dead wife, who seems to have no memory of what has happened to her.
34. Hammer Of Gods: Sam and Dean end up in a seemingly one-star motel at the side of the road in Muncie, Indiana, but it turns out to be a four-star hotel with staff who are a little too friendly for the brothers’ liking. They soon discover strange things happen at the hotel and guests are disappearing one at a time. They are soon trapped by the staff, who turn out to be a group of pagan gods, including Kali, Ganesh, Mercury, Zao Shen, Baron Samedi, Odin, and Baldur, and who want to use them as bargaining chips to stop the Apocalypse.
35. Swan Song: Chuck begins to narrate the life and times of the Impala and the boys’ life inside of it. Chuck reveals their time spent in the Impala and how they made it their home throughout the years before and after they began hunting. Dean finally agrees to allow Sam to say yes to Lucifer while Sam requests he not try to bring him back and to have a normal life with Lisa and Ben when he’s gone.
Season 6: The season begins a year after the happenings of the previous season finale with Dean Winchester (Jensen Ackles) living a happy and normal life. Mysteriously, Sam Winchester (Jared Padalecki) is freed from Lucifer’s cage in Hell and teams up with Dean, who leaves his new life behind and becomes a hunter again.
36. The Third Man: Sam and Dean call Castiel for help when they investigate a case about several dead police officers who seem to have been killed by the plagues of Egypt. Castiel confirms the staff of Moses was used to kill the cops and tells Sam and Dean that Heaven is in a state of chaos and civil war between angels and God’s weapons have been stolen. The three find that the officers were involved in the shooting of a young man, whose brother has the staff, which he got from an angel in exchange for his soul.
37. Weekend At Bobby’s: Bobby summons Crowley to have him return his soul as part of the deal to end the Apocalypse. However, Crowley reneges on the deal and holds it for a ten-year period. Bobby begins to research Crowley’s origins and even captures and tortures a Crossroads demon to find Crowley’s real name. Throughout the weekend, Bobby provides support for the Winchester brothers and the rest of the hunters, helps fellow hunter Rufus bury a Japanese okami demon (later having to kill it again himself) and contends with an FBI agent trying to find Rufus.
38. Family Matters:
Dean enlists Castiel’s help to find out what’s wrong with Sam, who reveals he can’t sleep or feel any emotions except for physical pain. Castiel discovers Sam’s soul is missing and when he goes elsewhere to investigate, the Winchesters learn that Samuel is going to hunt down the Alpha vampire. After torturing the Alpha vampire, Crowley appears to reveal that Samuel works for him to collect alpha creatures and he is the one who brought Sam back from Hell
39. Caged Heat: Sam and Dean are ambushed by Meg the demon and some of her followers loyal to Lucifer, who are running from Crowley. Sam proposes a bargain: Meg will get to kill Crowley, if she can help them eventually recover Sam’s soul. Meg agrees, and Sam decides to seek insurance in case of treachery.
40. Appointment In Sammara: Dean meets with and makes a deal with Death: if Dean will take Death’s place for an entire day, Death will regain Sam’s soul and ‘fix’ the tortured parts. Dean tells Bobby and Sam of the plan, which Sam strongly disagrees with, but Dean goes ahead anyway. Dean is accompanied by Tessa to reap various people.
41. Like A Virgin: After Death placed Sam’s damaged soul from Hell into Sam’s body, Sam awakens back to his normal state only to have no stable memory of when he was around with no soul. Dean and Sam investigate some disappearances of girls who are virgins in Portland, Oregon only to find that dragons are behind the kidnappings.
42. Unforgiven: Sam gets a mysterious text message directing him to the town of Bristol, Rhode Island where three women have gone missing in the past week. Upon arriving in the town, they discover that Samuel and Sam had been there before, working on a hunt where men had gone missing. However, as time progresses in the town, Sam’s memories of his prior visit begin to surface, such as beating a suspicious police officer and having sex with various female witnesses (who were now the victims).
43. The French Mistake: After giving them a mysterious key, Balthazar sends the brothers to an alternate reality, where they are called actors named “Jared Padalecki” and “Jensen Ackles” who actually play Sam and Dean in a television show that follows their lives. Furthermore, they discover that everyone and everything they knew in their reality is gone in this reality: nothing supernatural exists, Bobby’s house is a set, “Castiel” is Misha Collins, and Sam is married to Genevieve Padalecki, who had played Ruby in the fourth season.
44… And Then There Were None: The presence of the Mother of All Monsters—Eve—causes a spike of monster activity in Sandusky, Ohio. Dean, Sam, and Bobby partner up with Bobby’s old friend Rufus to track her down.
45. Frontierland: Bobby discovers that ashes from a phoenix can kill Eve, and Dean finds Samuel Colt’s diary, where he claims to have killed a phoenix in Sunrise, Wyoming in 1861. They call Castiel so that he can send them back in time. Before transporting them through time, Cas explains the risks of sending them so far back and that they will only have 24 hours – longer, and he may not be able to bring them back.
46. Mommy Dearest: Sam, Dean, Bobby, and Castiel track Eve to the small town of Grants Pass, Oregon. They discover a bar full of dead people, where Eve changed all of the patrons into vampire/wraith/shapeshifter hybrids, which Dean names “Jefferson Starships”.
47. The Man Who Would Be King: The majority of the episode is from Castiel’s perspective. He is no longer sure that stopping the Apocalypse was the right choice. He also reveals that he was the one that pulled Sam from Hell, but didn’t have the power to pull him out all the way, though he was unaware of it at the time.
Season 7: The season focuses on protagonists Sam (Jared Padalecki) and Dean Winchester (Jensen Ackles) facing a new enemy called Leviathans, stronger than anything they have encountered so far as well as rendering their usual weapons useless.
48. Meet The New Boss: Having gained an incredible increase in power by absorbing the souls of Purgatory (the afterlife of monsters) in the previous season finale, Castiel (Misha Collins) appoints himself the new God and sets out to right some of the wrongs in the world, but is increasingly disturbed by the entities from Purgatory that are proving difficult for him to control. Sam Winchester (Jared Padalecki), Dean Winchester (Jensen Ackles), and Bobby Singer (Jim Beaver) enlist the help of the demon Crowley (Mark A. Sheppard) in securing a spell to summon Death (Julian Richings) and bind him to their will so that they can use him to stop Castiel.
49. Defending Your Life: While investigating a series of murders in Dearborn, Michigan, Dean and Sam learn that the Egyptian god Osiris is responsible for the killings. A god with nothing but revenge on his mind, Osiris is putting random people on trial for any mistakes they’ve made in the past and then promptly killing them if they’re found guilty.
50. Shut Up, Doctor Phil: Sam and Dean find cases of individuals meeting gruesome deaths in Prosperity, Indiana. Several of the crime scenes, however, contain ancient Romanian coins, acting as hexed objects. The brothers learn that each victim was connected to Donald Stark (James Marsters), a wealthy businessman, philanthropist and pillar of the community.
51. Slash Fiction: Sam and Dean are framed for a series of murder-robberies by two Leviathans that take the forms of the Winchester brothers. Bobby tries to figure out a way to kill the Leviathans using the one they had captured, while Sam and Dean take refuge with a surveillance expert, who gives them temporary identities to evade authorities.
52. How To Win Friends And Influence Monster’s: Following up on a possible sighting of the ‘Jersey Devil’, Sam, Dean and Bobby attempt to figure out what monster is out killing campers in Hammonton, New Jersey, while staying off the grid to avoid being tracked by the Leviathan.
53. The Slice Girls: m and Dean investigate a case in Seattle, Washington where the victims’ hands and feet have been severed and each have been branded with a strange symbol.
54. The Born Again Identity: Lucifer has driven Sam to the point of mental breakdown, because of which he is now committed to a mental institution. Dean promises Sam to find a cure to this illness and calls every hunter in the diary.
55. The Girl With The Dungeons And Dragon’s Tattoo: Lead Leviathan Dick Roman acquires Frank’s hard drive that contains sensitive information about the Winchesters and gives it to an unsuspecting brilliant hacker named Charlie (Felicia Day) telling her that she has 3 days to crack the encryption or she is fired. At the same time, Bobby appears to Sam and Dean and explains the Leviathans’ great plot which he learned before Roman killed him.
56. Reading Is Fundamental: Sam and Dean break open the clay tablet they stole from Dick Roman causing a storm from which lightning strikes teenager Kevin Tran (Osric Chau) and causes Castiel to wake up. Meg calls them and they arrive to find Castiel awake and with his memory intact, but insane. Castiel explains the tablet they found inside the clay is the Word of God, information from God written out on a tablet by Metatron, the celestial scribe, but he lacks the ability to read it.
57. There Will Be Blood: Dick forces Kevin Tran, the prophet chosen to read the Word of God to translate the Word for him by threatening his mother. Bobby reveals to the Winchesters that the blood of the remaining fallen, the Ruler of Fallen Humanity and a Father of Fallen Beasts refers to Crowley and an Alpha. They summon Crowley, but he refuses to give up his blood until they get the other items needed, directing them to the Alpha Vampire who escaped before Castiel could kill him.
58. Survival Of The Fittest. Dick speaks to Crowley about a deal: in exchange for giving the Winchesters the wrong blood, Dick will give him and his demons Canada to do whatever they want with as long as they leave America alone.
I shall continue with Seasons 8-14 after Season 14 finishes it run.
Source: Episode and Season Synopsis taken from both Wikipedia and IMDB