Serious Forum: What's the sickest movie you've seen?

OK so I know you're used to reading my rantings about killing, raping, dismembering etc in entertaining ways (I like to think), but I really want your opinion on something ...

I'm on a quest for the sickest, weirdest, offensive, most violent, socially unacceptable films ever made.

I'm talking FUCKED UP! The type of shit that makes you feel dirty for watching, and makes you want to kill yourself for liking!!

For your viewing delectation, if you're into the above, I can recommend the following in order of sickness in my opinion :-

1) 'A Serbian Film' - yes, that's the name - holy fucking shit - about an hour in it explodes into ridiculous filth & depravity

2) 'Salo' - This shit is so sick that the director was murdered - made in 1975 it was banned for 20 years - about a fascist regime that makes teens do unspeakable things

3) 'Visitor Q' - just amazingly messed up shit dealing with a few different taboo sub-cultures in Japanese society

Other notables are 'The Human Centipede', 'The Last Circus', 'Battle Royale' (I & II), 'Gozu', 'Ichi the Killer'. I'm sure there are others that I can't think of right now - I'll post as I remember. I love most Japanese / Korean / Asia Extreme shit.

I'm also talking about individual scenes like from 'Irreversible' where Monica Bellucci gets ass-raped for about 8 minutes, 'The Killer Inside Me' where Casey Affleck punches Jessica Alba in the face about 200 hundred times - there's just something about that scene - I can't stop watching it. Brilliant!

Come on you cunts - I know you can expand my horizons - if you can top A Serbian Film or Salo I'll send you a Mars Bar!