Originally Posted by ElephantSack

A Clockwork Orange
Fear and Loathing in Las Vegas
Waking Life
Donnie Darko
Baraka
I Heart Huckabees
The Lord of the Rings Trilogy
Death to Smoochy
Dreams
Into the Wild
Kung Fu Hustle
Natural Born Killers
How High (that's right, bitch)
every Guy Ritchie and Tarantino film I've seen thus far

Movies that I can't really say I like, but are undeniably powerful
Irreversible
Tideland
What the Bleep Do We Know?
What the Bleep Down the Rabbit Hole