Another (completely unrelated) message board I frequent started this game earlier this morning (already approaching 300 posts seven hours later).
You have to summarize a movie using the vaguest description possible and let others guess it. It can be any movie of any genre from any era. You don't need to wait until the previous movie has been guessed, feel free to describe and answer as you wish. Have fun everybody!
Here's a start:
There is only one sane person left in a major city because of an epidemic.