Yesterday, we posted a very funny video from College Humor that resolved some classic ambiguous endings in film: The Graduate, Lost in Translation, and so forth. But it reminded me that sometimes these vague endings can be truly irritating and frustrating. I hate sitting through what is shaping up into a good movie experience, then the end negates the whole film, makes no sense, or just plain ends without warning or closure.
Sometimes these ambiguous endings are great: I felt the ending of The Wrestler was just right, and I also liked the way the recently released A Serious Man concluded. Sometimes these unresolved endings are meant to pave the way for a sequel, which is great if you happen to have the sequel there with you, but when it's a new movie, you just want to throttle the filmmakers. Here are 10 movies with endings that make me want to throw a popcorn box at the screen, or find the filmmakers and demand an explanation. It goes without saying that I'm about to spoil the endings of 10 films, so you've been warned.