I love Miike Takashi. Ichi the Killer I watch at least a few times a week, it has awesome music and a colorful scheme, despite all the visceral violence.
Imprint is another good one of Takashi's. Everyone I let borrow this film are unable to finish it. Once they see that first torture scene it usually is turned off they say.
It's good stuff. I recently bought Visitor Q; now that is hardly any gore and violence, rather psychological and visual disturbing, really screwed up imagery.
My next film of his will be Audition.