Tina Fey got her start behind-the-scenes as a writer for Saturday Night Live in 1997, and after three years of scribing scripts, she moved to the front of the camera. She proved her worth quickly, even salvaging the failing Weekend Update segment. In fact, according to Rolling Stone magazine, she is one of the top three most influential SNL cast members ever (following only Eddie Murphy and John Belushi). She continues to contribute to the show even still!