There's really no good way to explain what The Great Movie Experiment is other than just testing it. It's quite addictive and you somehow feel like you're contributing to something great.
"The gist is that we're compiling a list of movies based on head to head votes, matching them up in a giant round-robin tournament."
It's not really what head-to-head voting is about but there are times I would like a third button when a film sucks. Many times you're confronted by one mediocre film and one film which is only ok; then you're "forced" to vote for the one that is only ok.
Great work Matthias!