For me, the following are at the top of my list:

2001: A Space Odyssey
The Day the Earth Stood Still (remake with Keanu Reeves)
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The Birds. That movie has no ending, but just ends.
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American Psycho. Watched it once and I need to watch it again to wrap my head around it.
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A Serious Man (Coen brothers). I've heard you have to have a Jewish background to get a lot fo the cultural stuff but whatever. The movie just stops existing, rather than ending.
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The Shining.....Jack in the picture from the '20s.....what does it mean?
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You have to have read the book for it to really make sense; in the book there's a lot about him interacting with the ghosts of the house in some grand ballroom, and that picture was probably meant to signify that he's dead and now amongst the "permanent guests" as a ghost.:-)
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What an awesome thread! Now if only my brain would work properly...

Ok. For clarification:

Donnie Darko

Eraserhead

In The Mouth Of Madness

Syndiche New York
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It certainly is an abrupt ending, but you can take the looming torpedo to mean that the son is going to die and basically, sh!t will hit the fan. I've heard reviews that say that the movie is a take on the story of Job, where God and the devil test his faith. Towards the end of the movie though, just as it looks like the tests are over and things will get good for him again, Gopnik departs from the story of righteous Job when he sins by taking the bribe and changing the grade, thus God punishes him (the doctor immediately calls with bad news, and the tornado appears on the horizon. In this sense, it's not really the story of Job, and more simply a story about a man who is cursed, hence the epilogue with the Dybbuk:-)
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Thanks Clayton....I have read the book, but I still find myself unsatisfied with that ending.....yet it's still my favorite movie of all time.
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Basically, he finally does go nuts. Know how it starts out with him in the asylum? He wasn't crazy then. He goes through and explains what happens to the guy who comes to see him, but remember when Sutter Kane tells him "I write therefore you are"? When he goes to see the film, he watches the film and it shows everything that happens during the movie....his brain just sort of goes the way of the dodo, because he realizes his entire life was nothing more than a piece of fiction. Got a very Lovecraft angle that, unless you've read a lot of Lovecraft, is hard to grasp.

One of my favorite films, right up there with Dr. Strangelove and Blade Runner.
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correction

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The Princess Bride

I mean, they die at the end of the book but the movie ending implies happiness every after. Lying in the movies doesn't send the right message to kids.
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Doubt
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You can't knock a movie with Fred Savage. And classic lines like "Hello. My name is Eningo Madoya. You killed my Father. Prepare to DIE!"

It's just poetic!
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Thanks Brother. It's time for a rewatch!
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No country for old men
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Happy Gilmore.

How the hell did Chubs grow his hand back to play the piano.:-) Gets me every time:-)
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Obviously you've never seen "Vice Versa". :-)
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Memento....
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:-)

Also, never liked the ending of "Gone With The Wind."
After all... tomorrow is another day.
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