I now have an easy answer to the question, "What's the worst movie you've ever seen?"
Manos: The Hands of Fate is that movie. Pretty much every possible way a movie can be bad, this movie was bad in. The acting was terrible, the writing was terrible, the pacing was really bad (they spent like 10 minutes showing crappily shot driving scenes at the first), the plot was anticlimatic and generally stupid, the editing was far worse than anything I've seen before (they'd often do things like splice multiple takes together so characters would suddenly shift a foot to the right, or the lighting would change or something). I LOVE really bad movies, but if it hadn't been for the fact I was watching the MST3K version, I don't know if I could have watched the whole thing. It's so bad that it almost stops being funny. I checked on IMDB and it clocks in at #3 on their bottom 100 films list. It shows.
So I not only got some entertainment, I also now can say what the worst movie I've ever seen was without having to think about it! Yay!