Alter
Banned
Begotten is fucking awesome.
Still have not seen it, but the director's video for Interpol's "The Heinrich Maneuver" is pretty fucking good and detailed. I refuse to watch Begotten until I find it on dvd or VHS for a good price.
Anyways...
Eraserhead
Lynch's debut is creepy but also very detailed with a great amount of "fucked-up-isms."
Far North
This film is not fucked-up so much until the last scene. Which is SO FUCKED UP.