Sometimes a TV screen just isn't big enough.



"Jem and the Holograms" is the latest in a long line of television series that have busted out of the small screen and hit the big time with a big-screen adaptation. But the small-screen magic doesn't always translate well as a super-size experience. So how do you know which ones to watch? That's where we come in.



Here are 21 more movies based on TV shows that are definitely worth your time.