Now this was one very disturbing movie:
Fight for your life (1977)
This movie has to be the best and most sickess portrayed of Racism in America. Even after the film was over I couldn't believe the evilness of the characters. Great film, but it pushes to limits of tolerance. How disturbing was it? Just listen to redneck give his comments in this film. I recommend it! Just be aware if you're easily offended by racist comments.
The Matrix Revolutions: Neo's crying after Trinity is impaled in four places and she lives long enough to give a 15-minute goodbye speech. So disturbing, in fact, that it was the most phoniest sadness I've ever seen in a movie and I actually found myself laughing. I wondered if this movie was intended as a comedy. I could have sworn it was.
The rest of the movie is pretty disturbing, too. It's also loud, ugly, violent, and just plain awful.
That girl in The Ring was disturbing.
In Cabin Fever when they opened that shed door and it shows that girl's rotting body. Actually... pretty much ALL of Cabin Fever was disturbing...
In Gothika when it showed that guy kill that girl after raping her. And the part when they were showering and that girl shows up... *shivers*
That one guy's hand in Scary Movie 2 (esp. when he's serving them food *gags*).
The new Texas Chainsaw Massacre was extremely disturbing! Especially when Leatherface puts that guy on that meat hook when he was still alive. *shivers* The worst part about all that was the fact that it really happened.
That's all I can think of for now.
Red Superfly the ear scene in reservoir dogs was very disturbing. look at this from imdb.com When the cop pleads for his life during the torture scene, he says that he has a child at home. This line was improvised by Kirk Baltz, and when he first said it, Michael Madsen was so disturbed by the idea of it that he couldn't finish the scene.