Anything that has a lot of stuff happening in quick succession. When I'm high I can't stand movies that I love when I'm sober like 2001: A Space Odyssey and Apocalypse Now - they're too slow-paced. I watched Pan's Labyrinth high and it was freaky listening to the faun walk, but I had a hard time following the story.

Animated children's films are great though. I love watching old Disney movies with my friend, because it brings back so many memories. The Jungle Book was hilarious - he kept saying that all the characters were "African bluesmen" and we had a tough time figuring out which of the vultures corresponded with which Beatle (Ringo was the hardest). Robin Hood was kind of a let-down, but it was worth it for King Richard and Hiss the snake fighting. Oodelally!

But I'd have to say that the top films of all time to watch when I'm high are the old animated episodes of Tintin. Stuff is always happening, and it's always funny. Oh no Tintin, you just got chloroformed again!