I recommend this movie as well. It is a very interesting look inside the Hitler bunker. There is one scene that is a little scarring so if I ever watch it again I will probably skip that one.
Oh, this. THIS. This this this.
That scene has haunted me for years. Great movie; never, EVER want to see that scene again.
I actually have a lot of the movies already mentioned and happily watch them multiple times (Requiem for a Dream, American History X, Fight Club, Dogville). I can’t think of any movie I would consider ineligible for rewatch, as long as I thought it was good. If I thought it was bad or boring, well of course I don’t want to watch a bad movie again.
The only thing that maybe minorly qualifies is the curbstomp in American History X. I have rewatched the movie about 6 times I think. I just have to fast forward past that one scene.
There’s a couple for me that were already mentioned:
Deer Hunter, Sophie’s Choice
And another that has yet to be mentioned:
Ordinary People
I just realized that all of these have a suicide in the story. Maybe that’s the adversion to a rewatch: I was very close to that point at the age of 13.
From reading here on the SDMB I think that I could never watch Hotel Ruwanda, Grave of the Fireflies or Come and See.
If they are as depressing as people say, I would probably vanish and cease to exist.
Funny. I thought it was boring. Couldn’t wait for the end.
Dances With Wolves
The Shining
Saving Private Ryan
Idiocracy
I’m an emotional softy who gets all weepy during a lot of movies, and I could watch this one again. It shows the events leading up to the slaughter and the aftermath, but I don’t recall seeing the actual slaughter. Mostly it’s about Don Cheadle as Paul Rusesabagina, a good and decent man sacrificing everything to save people.
The Pianist.
It just has some way-too-sadistic scenes in it for me. One of the early ones is eerily similar to a recurring nightmare I had as a young child.
Another movie here – and I’m not sure it qualifies – is Syriana. I’ve never gotten to see the whole movie and I still want to, but what I’ve seen of it so creeps me out I know once I finally see it end-to-end I’ll never want to watch it.
This is exactly how I felt. But it was a really good movie. I wasn’t brave enough to look around, but I’m pretty sure there weren’t many dry eyes in the house. I think the scenes at the German farmhouse area were the hardest to watch. The one with the German and American soldier in the battle to the death, and especially (I’m a mom) the one with the young American soldier dying in the yard while being held by his fellow soldiers and wanting to see his mom. AGGGGhh!
Gattica. A really good movie, but an incredibly depressing vision of the future.
Jude Law shutting himself in the incinerator to preserve Ethan Hawke’s secret was just too much to watch again.
Antichrist.
Pretty disturbing movie and one I probably won’t see again. I very much enjoyed it, however.
A lot of these movies I’ve seen multiple times, not sure what that says about me.
I love Von Treirs films. Antichrist is the ONLY one I feel like seeing again, oddly enough.
Dogville gets me stabby and Waves makes me want to jump inside the film and shake people.
As far as American History X - What’s the one scene some of you mentioned as most disturbing?
Is it when his brother gets shot at the end in the bathroom?
Taking a major deviation from most of the replies here (what else is new, Darrell? 
), but here goes.
#3 Rocky. I get it, his whole life was a million-to-one shot, even a bum can find love, organized crime is a waste of life, if you can’t win at least go the distance, etc. The problem is that Rocky and company just aren’t very…exciting. They argue, the go to the skating rink, they have dinner. Whatevs. The fight was a mild disappointment, too; I’d rather have seen the last two rounds in full rather than a bunch of snippets.
#2 Titanic. The thing that’s (understandably) easy to forget in all the mountain rages of hype was that this was an incredible technical work that pulled off a truly astonishing amoung of CGI seamlessly. It’s great to look at. More the pity, then, that the story, as my dad pointed out, was just a clumsy rehash of West Side Story (which itself was just a modernized Romeo and Juliet). Also, I think Caledon Hockley needs to take a long walk off a short poop deck.
#1 Indiana Jones And The Temple of Doom. The funny thing is, in many ways this is the best Indiana Jones movie. There are some really amazing action sequences, the villain is unmistakably evil and there will be dire consequences if he succeeds, the hero does something truly heroic (“We’re leaving…all of us.” was one of Indy’s best lines ever), and in the end he confronts the villain, defeats him man-to-man, and obtains the object of his quest. One of the very few times Indy made a direct, tangible, major difference instead of being a plaything of the gods.
So why only one viewing? Simple. Willie. Willie. WILLIE. The most irritating, worthless, irredeemable, unbearable character in any movie I’ve seen ever (and I’ve seen South Park: Bigger, Longer, And Uncut). The moment I reached the end, I decided that I could not spend one more second with this shrieking, whining, waste-of-flesh-and-oxygen harpy.
As for Grave of the Fireflies, this may surprise you, but I wouldn’t have the slightest problem watching it again if I had a reason (my dad was doing a screening and wanted my opinion or something).
I would have thought that’d be obvious - the curb scene.
The English Patient.
It just kept going on, and on and on. About 1 hour in, I was already completely lost, and it is 3+ hours long. Luckily, I just watched it to have an excuse to pork my gf.
I hated the film, but supposedly it’s critically acclaimed.
There aren’t any movies I think are great that I wouldn’t want to see again. If I think a movie’s great, and there are so many great ones listed in this thread, I want to see it again and again. Like this…
I just saw this yesterday for the first time. The entire 9 1/2 hours, in a movie theater, on the big screen. I’d heard about it since it was first released but never had the opportunity or constitution to watch it. It’s fascinating and compelling and deserves to be seen, and I thought this would be a once-in-a-lifetime opportunity* so I went. I’m so glad I did. It’s moving and intense and hard to process, but I’d watch it again in the theater. I couldn’t watch the whole thing at home but that’s only because the multiple pauses and distractions would dilute its impact.
- it might play again in a theater, I’m sure it has many many many times since 1985 that I didn’t know about, but next time I might have to work or be sick or have other plans and might not be able to go, so this might be the only time I’d get a chance to see it in its entirety in one sitting.
I’d see that again over shower rape.
City of God - I watched it because Ebert said it was the best movie he’s ever seen and I’m really glad I saw it, but it was loooong. So looooong.
I’m not a fan either, and the fact that it beat Fargo, Shine, and Secrets and Lies for best picture makes me hate it even more. I won’t watch this movie again because I plain don’t like it.
I’m glad I’m not the only one who didn’t understand what was so great about that movie. It was so boring and not romantic at all.
The Green Mile, loved it but cried so much I can’t watch it again. I can barely think about that guy getting electrocuted with a dry sponge without gettting teary-eyed