Can we split these into ones that were part of the overall mythology and ones that maybe weren't?
I didn't like the episode that wrapped up the Samantha stuff, for instance (the cop and his missing son).
I ended up liking a great deal of the 'Mulder is leaving' eps too. Doggett/Reyes were cool too.
Pusher would be my fave. Excellent baddie.
One of Vince Gilligan's best. Not sure how well it has aged though, heh.
I was going to say this. Walter White 0.1
Favorite: Triangle
Least Favorite: The one with the Chupacabra.
Pusher, Jose Chung, and Clyde Bruckmans are my favorite. I too have Cerulean Blue stuck in my head, enough that I didn't even remember the episode name until this post.I'd welcome anyone wanting to split this into mytharc & motw. Good call for those that said Pusher. Cerulean blue is a phrase that's baked into my brain.
Honorable mentions to any episode written by or featuring Darin Morgan.
Can't think of a least favourite right now, but one of my all time favourites is 'Closure' from season 7. The ending is just perfect and the use of Moby's My Weakness hits all the right emotional cues.