How long have you got? lol
(these are all emule network friendly)
Ichi The Killer (amazing, I loved this) - Also get 1-Ichi (the prequel - again awesome stuff)
Takashi Miike's films are ace, he's a stunning director, and one that likes to push things, new directions aplenty, check out more of his films:
Dead Or Alive
Audition
Dead or Alive 2: Birds
Visitor Q (really sick!)
The Happiness of the Katakuris (amazing, a musical horror/comedy affair)
Dead or Alive Final
Gozu (so surreal you'll think you're tripping!)
Some other films by other directors:
Jisatsu Circle (Suicide Club)
Ju-on (do not get Ju-on - the grudge, as that was a shit remake)
Yin shi nan nu (Eat Drink Man Woman)
Returner
Over The Rainbow
(coupla words on some of those films
here)