11. Tracy Morgan (1996-2003)

Before Tracy Morgan would go on to breathe life into Tracy Jordan, the most beloved character on 30 Rock, he was killing live audiences and nationwide viewers simultaneously on Saturday Night Live. After joining the cast in 1996, he stayed on board for seven years, sparring with some of the actors, but unleashing some of the show's most awesomely quotable characters like Uncle Jemima, Astronaut Jones, and Brian Fellow.