I've got no idea why these "Four Pics One Whatever" games are so popular, but, it's the world we live in. The latest and, well, greatest, I guess seems to be Four Pictures One Movie which has you guessing a movie title based on four screen grabs of the movie itself. These aren't my cup of tea, but you can't deny the stupid success other incredibly similar games have seen.
Four Pictures One Movie should be available in the US App Store at 11:00 PM Eastern, in the meantime, you can swing by the forum thread to see what our community is saying about the game.
International App Store Link: Four Pictures One Movie, Free (Universal)