I found Event Horizon disturbing. The “We don’t need eyes where we’re going.” scene in particular. Sam Neill can be a rather disturbing guy when he puts his mind to it.
In the already mentioned but notable category… Cube and Pi were also a bit disconcerting to me at times.
Well, another vote for American History X … “the best movie I’ll never watch again.”
Another vote for Event Horizon.
American Psycho
Natural Born Killers
Se7en
Hannibal
Vote number two for Man Bites Dog. One of the few movies I would actively refuse to watch again. When I saw the thread title it was the only movie that came to mind. I supose Funny Games and Henry, Portrait of a Serial Killer should be on there as well. See a pattern? Home invasion kind of freaks me out…
A television adaptation about 25 years ago. It was called “As Quiet as a Nun” and I was about 5 or 6 when I saw it. Nothing has ever scared me as much as that; it had a nun with no face and was the talking point at school the next day (I can’t believe the type of scary rubbish we were allowed to watch then!).
I couldn’t have anything like a dressing-gown or coat hanging on the back of my bedroom door for years, looked too much like a nun in the dark.
Event Horizon does it for me too.
Aliens was scary as hell when I first saw it when I was 12, I just couldn’t watch it again until several years later.
But for sheer weirdness, I have to vote for Talented Mr. Ripley. First you start to like the main character, but then he turns out to be an utter madman.
I was yelling at him for the rest of the movie when he just sank deeper and deeper.
WHOLEHEARTEDLY agree with this. Most disturbing thing I have ever seen.
It is evil.
Well, he WAS the Devil once, you know. 
Wait!
No!
Actually, the character “leashes” flies, to the degree to which that’s possible. The book goes into how the guy carefully catches flies, ties string to their abdomen, and then ties the other end to his buttons or whatnot.
:shrug:
We Southerners have some freaky eccentrics and tall tales!
That was pretty disturbing, and quite good. Most disturbing about it, though, is the new sequel recently released, American Psycho 2, starring one of the girls from “That 70’s Show” as the new killer… haven’t seen it yet. Not sure if I want to. I just know it’s gonna be bad…
Hannibal, though… that was a non-event for me. I was pretty frankly bored during that movie. Just dumb.
Carrie also disturbed me-because through the whole movie, you really care about her, and want her to get away from her fundy nutball of a mother, and be happy-and then it just blows up.
It makes me feel dirty.
OK. Strongly recommend you don’t see Baby of Macon by the same director. I’ve never turned off a movie 'cause it is too disturbing, and I even watched the whole of Salo, but Baby of Macon is some very wierd shit.
I watched The Talented Mr. Ripley up until Ripley murdered his friend with an oar.
Someone please tell me he wasnt screaming “my brains” before he died.
I don’t know if anyone remembers The Day After. I think it was a made-for-tv movie? About nuclear war.
My mother should not have let a child watch this. It stole my innocence, I kid you not. I can still see the x-ray effect before people literally disappeared. Gah!
As an adult, the only movie I really have problems watching is The Exorcist. It just gives me the willies every time.
American Beauty disturbed me too because it was an ugly reflection of my own life. My husband and I separated the next day. I think we BOTH saw ourselves as the lead character.
The only movie that ever got to me was the original Nightmare on Elm Street. But I have good reason! I was about 8 years old, in a cabin, in the woods, miles and miles from town, all the adults asleep for the past several hours, no lights on, and in the middle of a 3-day-long rainstorm. I had nightmares for weeks.
After that, there really hasn’t been anything that truely disturbs me, wether it’s a movie or not. And after adding about ten years, the movie actually seemed rather good 
Henry: Portrait of a Serial Killer - I wish I had never seen this movie. Some things you just don’t need in your head. Very realistic noises of terrible things. I wouldn’t get near this movie now. My #1 vote.
A Clockwork Orange - Tried to see this in the theatre when I was 17. I walked out in the middle crying hysterically. The concepts were too much for my young brain to handle. (I’ve seen it since.)
Jaws - I swear, was I disturbed? I guess so, I couldn’t even use the toilet without thinking a shark was going to bite my butt. Couldn’t do the water for YEARS.
Another vote for** A Cook, the Thief, His wife and Her Lover ** - The ending is so repulsive, it made me want to throw up even though the movie was visually fascinating. Yuck!
-pinky
Another vote for Welcome to Sarajevo. The most disturbing aspect? A lot of the footage of the violence is real.
I can’t believe only 1 concurring selection (from Ich Bin’s) out of almost 80 posts! You want disturbing:
[ol][]Soldier Blue: Candice Bergen, John Anderson, Donald Pleasence, & Peter Strauss star in this Cavalry drama. The last sequence depicts the ruthless slaughter of an Indian Tribe. One of the most haunting & “unwatchable” scenes I’ve ever witnessed.[]Little Boy Blue: Ryan Phillipe growing up in rural Texas discovering his abusive ‘Nam Vet father forced him to have sex with his mother. A very disturbing tale of incest with a “could this really happen?” summation. Funny GamesDefinitely have to second Ich Bin’s nomination for this German, subtitled art house film. Recently saw it on IFC. It was so much more disturbing than A Clockwork Orange that I made a thread about it in Cafe Society.[/ol]
The Ce–great imagery. In fact, a little too good–seeing some of the killer’s fantasies was disturbing. Also, his flashbacks of his abusive father.
Also, Citizen X. It’s an HBO movie about a serial killer in the USSR.