[Skaboy]

Posher778: If Scream 3 is the most intense thing you've seen, you have a lot yet to see my friend (your "top ten" reinforces this). Just a few that spring to mind and which I found intense:

The rape scene from Irreversible: a single shot, with no cuts; and the guy who just walks past. Humanity doesn't get much lower.

Irreversible again: the fire extinguisher scene. I find that very uncomfortable viewing.

Men Behind the Sun: the autopsy. Very drawn out and sadistic.

Mordum: quite a few intense, sick scenes in that one.

Cube: the first character to fall victim to the booby traps, who gets diced.

Wu Shu (Run & Kill): the burning of the daughter is pretty extreme. There are probably a load more HK Cat III scenes of notoriety that I've not seen yet.

Cannibal Holocaust: quite a few intense moments but the final dismemberment is quite heavy going.

Brain Dead: the whole film. Absolutely hilarious though, so perhaps not intense, just extreme.

And I've yet to watch some recent acquisitions which might feature here post-viewing: Ichi the Killer, New York Ripper, Nekromantik, Aftermath...