Seriously, Irreversible is very dark and very disturbing and not for everyone. But to see it, is to see some very commited filmmaking and performing no matter what you think of the picture's subject.
Bellucci was maybe the most severe casualty of The Matrix sequels as so many people now know her solely as the rubber-dressed extra who got to snog Keanu for, like, 2 minutes.
Hopefully, The Passion Of The Christ will go some way to readdressing that.