Perhaps these hard-to-predict movies simply have pointy bits sticking out. A rose is great until you get poked, then you irrationally throw it away. Napoleon Dynamite has lots of parts that make people uncomfortable - different parts for different people. Never mind its a great movie - it will get irrationally rated by a great many folks.
So come up with a Beta for a movie, or cluster the folks that like it anyway, or try to detect what kind of phobias a person has - these movies could be great litmus tests for homophobia or whatever!
Thats an interesting idea. I'd still be surprised though if that didn't correlate with some movies. If someone hates Napoleon Dynamite due to feature X, then they should dislike movies that have X as well. Or, at the least, avoid watching movies with X.
So, if your theory is correct then I see two possibilities:
1) The pointy bits are themselves strange and don't appear i other movies. This goes back to "the movie is strange" again though...
2) People who dislike these traits avoid movies that have them and the algorithms don't take into account what movies people haven't seen (or that taking it into account is very tough since most people haven't seen most movies).
