This should keep you busy for now:
A Serbian Film http://www.imdb.com/title/tt1273235/
Martyrs http://www.imdb.com/title/tt1029234/
Nekromantik http://www.imdb.com/title/tt0093608/
A L'Interieure http://www.imdb.com/title/tt0856288/
Ichi the Killer http://www.imdb.com/title/tt0296042/
Ex Drummer http://www.imdb.com/title/tt0812243/
Eraserhead http://www.imdb.com/title/tt0074486/
Man Bites Dog http://www.imdb.com/title/tt0103905/
Men Behind the Sun http://www.imdb.com/title/tt0093170/
Calvaire http://www.imdb.com/title/tt0407621/
Freaks http://www.imdb.com/title/tt0093170/
Salò http://www.imdb.com/title/tt0073650/
Videodrome http://www.imdb.com/title/tt0086541/
Irreversible http://www.imdb.com/title/tt0290673/
Human Centipede 2 http://www.imdb.com/title/tt1530509/
A Serbian Film http://www.imdb.com/title/tt1273235/
Martyrs http://www.imdb.com/title/tt1029234/
Nekromantik http://www.imdb.com/title/tt0093608/
A L'Interieure http://www.imdb.com/title/tt0856288/
Ichi the Killer http://www.imdb.com/title/tt0296042/
Ex Drummer http://www.imdb.com/title/tt0812243/
Eraserhead http://www.imdb.com/title/tt0074486/
Man Bites Dog http://www.imdb.com/title/tt0103905/
Men Behind the Sun http://www.imdb.com/title/tt0093170/
Calvaire http://www.imdb.com/title/tt0407621/
Freaks http://www.imdb.com/title/tt0093170/
Salò http://www.imdb.com/title/tt0073650/
Videodrome http://www.imdb.com/title/tt0086541/
Irreversible http://www.imdb.com/title/tt0290673/
Human Centipede 2 http://www.imdb.com/title/tt1530509/