Beavis and Butthead movie
Some of my favorites, to name a few.
The Fountain score, by Clint Mansell, is one of the best pieces of music I've ever heard in a movie. Even independent of the movie, it is beautiful music. Have a bunch of the tunes on my ipod. His score for Requiem for a Dream is no weak piece either.
Not excluding myself, but you can definitely tell how old the average member of this board is when the consensus best soundtrack is from Spawn.
... Good soundtrack, don't get me wrong, just saying.