Bill Hader is an American actor, comedian, producer, voice actor and writer who came to comedic prominence in the world of Saturday Night Live. He's well known for his supporting roles in Judd Apatow comedies "Superbad," "Pineapple Express" and "Forgetting Sarah Marshall." With...Read more an eight-year career as a cast member of SNL (2005-2013), Hader earned a reputation for his excellent impressions, and has gotten everyone from Franklin Roosevelt to Clint Eastwood to Stephen King and Phil Spector down to a tee. His memorable stock character Stefon appeared regularly on SNL's Weekend Update as a correspondent who promotes bizarre, macabre nightclubs. Hader also voiced the lead role in "Cloudy with a Chance of Meatballs" (2009), and is currently a writer on the long-running "South Park."