Before succeeding Jay Leno as the host of "The Tonight Show," Jimmy Fallon rose to fame as a cast member on what long-running NBC sketch comedy series?

Saturday Night Live

Fallon was a cast member from 1998 to 2004, where he was well known for co-anchoring the "Weekend Update" segment. He is one of several alumni, including Conan O'Brien and Seth Meyers, to move from the sketch show into late-night hosting.