Willy Wonka and the Chocolate Factory
**The Cabinet of Dr. Caligari ** (the original messed up movie)
**Hair
Jesus Christ Superstar ** (trippy and funky)
The Pink Elephants sequence in Dumbo is really messed up dude.
A Scanner Darkly is pretty weird.
Blue Velvet
Wild at Heart
The Wizard of Oz is pretty messed up. Try explaining the plot to someon who has never seen it.
and of course the work of Terry Gilliam
**Time Bandits, 12 Monkeys, The Adventures of Baron Von Munchausen ** and Brazil.