well, that's a tough call. based on calling a movie the worst movie ever, it is definitely 'the room', written and directed by tommy wiseau. However, unlike dumb and dumber, this guy didn't write the movie in an attempt to be so stupid as to make it funny. He geuinely believed it was a profound work of art, which is why I also think it is probably the best movie ever. It's terribly written, terribly shot, terribly acted, and terribly AMAZING.