A perfectly selected pop song can transform a movie scene from great to classic. We've rounded up our 31 favorite examples in film, covering everything from horror to comedy to romance to action to art film. Before we start, a word on our criteria: We excluded musicals, concert films and fictional live performances (i.e., someone playing onstage in the world of the film). We have, however, included karaoke scenes. And yes, Winona Ryder and Patrick Swayze pop up more than once on this list.