Bruce Springsteen and the E Street Band first covered "Santa Claus Is Coming to Town" back in 1975, and they revived the classic to close out Saturday Night Live [1]'s Christmas episode. Tina Fey and Amy Poehler hosted the show [2], and while they danced along to the final song, they're not the best part. Paul McCartney, or as kids these days know him, the New Artist That Kanye West Helped [3], jumped up on stage to sing along! Was he just hanging out at Studio 6-B that night? Fun fact: while the song was originally called "Santa Claus Is Coming to Town," Bruce's cover changed the "Coming" to "Comin'," because he's a rock star.