Blue Velvet. That is one seriously twisted film.
A photographer (actually a Ferrari-driving stockbroker) holding a Leica M9 with kid-leather gloves and telling the the breathlessly bored audience in the shop, "this camera takes the most awesome photos on the planet". <*audience leaves*>.
I don't think I can ever watch the film of the Twin Towers falling again. I get get sick when I see it.
The remakes of the Pink Panther series and Get Smart disturbed me :)
Seriously, though, as far as "disturbing," I can use that to describe something, but never really found any movie disturbing, including many mentioned above. Even if it is based on real events, the fact that it is staged takes the "disturbing" part away for me.
We've watched spinal surgery on TV while eating dinner; not much phases my family.
However, years ago there was some news program showing reconstructive surgery on a little girls face. They had actually detached the face to do so. When they were pulling it back up like a mask, I did find it a bit disturbing.
I'm afraid just about any and all frightening movies or photos I've ever seen no longer phase me at all. I wish they did. The Exorcist was at one time quite horrifying, for instance. But I believe that what my Yahoo Mail news headlines page hammers me with repeatedly is the most maddening and sickening. Particularly in about the last 5 or 6 years. I do not get Fox or any other cable or satellite. My TV is practically permanently set on METV. But I do take a bit of heart that Fox hands it right back to 'em.
This photographic site and other related photographic fellowship goes a long way in allowing me to share a common interest with those from the "other side of the aisle", aside from namecalling and venom.
With that, I think the OP meant movies, and not "current events" as subject discussion.
The one film that did disturb me the most was Natural Born Killers. The is a certain scene featuring Rodney Dangerfield, where they turn a domestic violence situation into a sitcom. Yeah, I know it was done in that way for a reason, but I still found it really confronting and distasteful.
an image i wish i could forget
Yet others, e.g. Oklahoma, Brigadoon, Oliver, Phantom of the Opera, My Fair Lady, etc., we can enjoy every Christmas! (And particular on the, now very rare, occasions when they are shown on the big screen, preferably analogue in 70mm, six-channel sound......)