Kenan Thompson is the longest-tenured cast member on Saturday Night Live, having been with the show for 19 seasons. Fans may recall him as a teen on All That, Kenan & Kel, and D2: The Mighty Ducks. Thompson is currently the show's oldest cast member. But the 43-year-old has no plans to leave, despite the fact that he is working on a number of other projects outside of SNL, including his NBC sitcom, Kenan. Kenan Thompson has been a member of the Saturday Night Live cast for 19 years. The audience expects a high turnover of cast members on a show like Saturday Night Live. This is because the show is frequently a watershed moment in a comedian's career. Once they've established themselves on the late-night sketch show, they frequently have to decide whether to stay or leave for film and television projects. Thompson, according to Rolling Stone, has decided not to make that decision. The Emmy-nominated comedian has been a fixture on Saturday Night Live for th...