Thank you!
This idea is on my list for quite some time. It's simple and fun. I really don't know why I waited so long to build it.
I'm also planning to add some competitive features, like a leaderboard. But I liked your idea. A duel mode between two or more players sounds really fun!
And I agree it works really well with movies, but it's on the roadmap to expand to tv shows, games, books, bands, songs...