Let's see, I watch a shit load of fucked up movies, and every movie I list below if your into crazy movies you will love all of them.

Cannibal Holocaust
Ichi the Killer
Audition
Suicide Circle
A Tale of Two Sisters
The Descent(Before it was released in America)
Murder Set Pieces
Battle Royale
Vistor Q
Dead Or Alive
Oldboy
Gozu
Family
Black Society Trilogy
Izo
3 Extremes
Ringu
Dark Water(Non American Verison)
Ab-normal Beauty
Black Christmas
Jungle Holocaust
Dead Alive
Evil Dead
High Tension
I Spit On Your Grave
Ju-on
May

Could make this list longer, but I think I'll stop for now :thumbsup:
Now go download/buy because these you won't be finding at your local blockbuster