Why Do We Re-Watch Movies Over and Over?

Can you mouth along with every line from the movie Sixteen Candles? Have you recited Monty Python’s dead parrot skit one too many times for all your friends? We often go back to our favorite movies, TV shows, books, songs over and over and over again. But why? There’s no suspense. We’ve heard all the jokes before. We know what’s going to happen. But still, we can’t stop ourselves.