Someone has done a new trailer for The Shining, very carefully selecting certain scenes and clips, giving it a new voiceover and music, to make it seem like a wanky, feelgood comedy-drama. It's absolutely fucking hilarious. Check it out here (right click and save).
I'd love to see more of these. I want to see Driving Miss Daisy trailerfied as a horror, and The Exorcist trailerfied as a gross-out comedy.
Update! Here are two more:
West Side Story as a zombie movie
Titanic as a horror
Update 2! Another one:
Psycho: A Love Story