Season one - You could actually skip most of it. Season one is very procedural, cheesy, and “monster of the week.” Not as much from this season crops up later. It’s good to watch a few and get a sense of the first season and cases the boys take on. Here are the worst offenders:
- "Wendigo" - Skip it because it’s just like any monster in the woods movie you’ve ever seen. There’s nothing original. Just know that a Wendigo is “a malevolent cannibalistic spirit that could possess humans or a monster that humans could physically transform into.” They are mentioned later in the show.
- "Bloody Mary" - Snore
- "Hook Man" - Not good, but kind of fun. Watch it if you want to or have time, but you are okay skipping it.
- "Bugs" - This is the episode that nearly broke our will to finish this season. The boys don’t do ANYTHING to help the supernatural situation, it’s not nearly as gross or scary as it should have been, and it’s kind of boring too. You leave the episode thinking, “What was the point of that then? Why did Dean and Sam even go there?”
- "Route 666" - This episode features a racist truck that kills. A truck. A racist truck. Please tell us we’ve convinced you not to watch it.
- "Hell House" - Meh. Skippable.
Season two -
- "Everybody Loves a Clown" - The only important thing here is that Dean has angst and beats up the car with a tire iron. This is only important because they show it a lot in the recaps. You’ll want to know when it was.
- "No Exit" - We hesitated to put this on the list because it features Jo running off to be a hunter, against her mother’s wishes. It’s kind of important to that character, even though we don’t see her a whole lot in the series, however it’s a tad dull. Jo works a case with Sam and Dean and nearly gets killed. We also find out that John Winchester got her father killed by screwing up on a hunt. Jo isn’t so into Sam and Dean after that, but she still wants to be a hunter.
- "Croatoan" - The boys visit a town with a Croatoan virus that makes everyone evil/violent. It’s not as exciting as it sounds. Almost no one in the town lives. The virus is referenced later though.
- "Playthings" - This one isn’t bad, but if you are crunched for time, skip it. Otherwise, go ahead.
- "Houses of the Holy" - The only thing you need to know about this is that Dean doesn’t believe in angels or God, but Sam does.
- "Roadkill" - This is an unoriginal ghost story and a yawner.
- "Hollywood Babylon" - This episode has a great reference for Gilmore Girls fans, but it’s otherwise a cheesy reminder of season one.
Season three -
- "Sin City" - A boring episode confirms that the Ceiling Demon was named Azazel. Dean bonds a little bit with a female demon and Sam kills her. Ruby helps Bobby repair the Colt.
- "Red Sky at Morning" - The boys work with that female thief with the horrible British accent, Bella, and she still isn’t trustworthy. The baddie of the week is a ghost pirate ship. It’s awful.
- "Ghostfacers" - The only good thing about this turd is that Dean gets the nickname “Chisel Chest.” We don't know why he didn't get it before; dude is ripped.
- "Long Distance Call" - The last scene in the hotel room between the brothers might be worth your time, but the rest of the episode isn’t. Dean admits he’s scared and Sam promises to help get him out of his mess. It’s sweet. We love when they talk about their feelings at the end of episodes.
Season four -
- "Criss Angel is a Douchebag" - This one is watchable and has good moments, but Dean and Sam don’t really do anything, and it stalls the show’s best season. All you need to know from this is that Sam is hiding something from Dean/he’s up to something bad with Ruby, but we don’t get to know what it is yet.
- "It’s a Terrible Life" - This is a good episode that we think is largely a waste of time, even though it’s kind of fun. Watch it if you can, don’t sweat it if you can’t. The important thing to know is that Dean meets Zechariah, one of Castiel’s superiors. Zechariah shows up to encourage Dean that he is on the right path and the brothers would have chosen hunting evil even if they had not been raised by their crazy dad.
Note: "The Monster at the End of This Book" is possibly the best episode of the series.
Season five -
- "Fallen Idols" - Monster-of-the-week again. At this point, a procedural episode is unwelcome. We are trying to stop the apocalypse here! Paris Hilton just seems like a sideshow at this point. However, in season one, this would have been gold.
- "The Curious Case of Dean Winchester" - Man witch stupidity abounds.
- "Swap Meat" - A man witch trades bodies with Sam. The man witch episodes aren’t good.
- "99 Problems" - In which we meet The Whore of Babylon and Dean kills her. Then Dean goes back to Lisa, showing he still has feelings for her.
- "The Devil You Know" - The important thing is that Crowley offers Bobby a shot at Death in exchange for his soul. A lot happens in this episode, but nothing important/permanent. The boys get nothing done, so the hour is wasted.
Season six - The quality goes downhill to season one/two quality in this season.
- "Family Matters" - This is THE most boring episode of Supernatural, bar none. But watch the very end/fast-forward to the part where Crowley shows up and talks to the group. It’s either the last scene or almost the last scene. There’s mildly important plot info in that scene.
- "All Dogs Go to Heaven" - This episode is dumb.
- "Clap Your Hands If You Believe" - So is this one.
- "Mannequin 3: The Reckoning" - You should know not to watch this just from the name.
- "Frontierland" - If you’ve seen Back to the Future Part III, there is no reason to watch this. Just know that the boys get a hold of Phoenix ash.
Season seven - Okay. A lot.
- "Defending Your Life"- Longtime fans might like this one because Jo returns as a ghost. But we feel like the real Jo wouldn't be like that. She would get it and move on. She was a sweet, smart girl who chose to go out like a hero, not a grudge-holder. This episode is just bad.
- "Shut Up, Doctor Phil:- Not good and also not necessary to watch in order to get the rest of the season.
- "Season 7, Time for a Wedding"- Again, longtime fans might like this, especially as it features the return of Becky the fangirl. The rest of us just know this episode was stupid.
- "Time After Time"- Only watch this one if you've also seen The Untouchables. If you have, you'll enjoy it. Sidenote: We really hope you've seen that movie. It's fantastic.
- "The Slice Girls"- We hesitate to put this one because it features Aunt Jenna and perfect casting of her and Dean's daughter. Also, it's almost too weird. X-Files weird. It's like Supernatural meets Jerry Springer. You might not want to miss that. It is bad though.
- "Plucky Pennywhistle's Magical Menagerie"- This was a decent idea with a boring execution. Sam and the clown stuff was funny though.
- "Repo Man"- This episode is so similar to most other Supernatural episodes. There is just no reason to watch it. Supernatural is better when it's not a procedural and when there is more continuity because its procedural episodes just aren't that interesting. The characters they come across are usually bland, and we get boring results like these.
- "Party On, Garth"- An F if there ever was one. All you need to know is that Bobby is back as a ghost and the boys don't yet know it.
- "The Girl with the Dungeons and Dragons Tattoo"- Possibly the worst episode of the series. The boys DO swipe something the Leviathans dug up in their archaeology project. You'll see it in the following episode.
Season eight- A great improvement over the last two seasons.
- "Heartache"- Not terrible, but also not great or important.
- "Bitten"- We liked this episode a lot, but the Winchester brothers are hardly in it. Watch it if you have time, but don't fret if you don't. But if you have the time, do watch it.
- "Man's Best Friend with Benefits"- Ugh, no. No no no. The worst episode of the season so far.
Do you have any to add?