Mark Zuckerberg (born May 14, 1984) is an American computer programmer and Internet entrepreneur best known as one of five co-founders of the social networking site Facebook, where he is also the chairman and chief executive officer (CEO). On Saturday Night Live, he has been impersonated by Andy Samberg on October 9, 2010 during the Weekend Update segment, on December 18, 2010 during the "A Message from Mark Zuckerberg" miscellaneous sketch and on January 29, 2011 during the opening monologue where the real Zuckerberg also made a cameo appearance. Zuckerberg was impersonated on Weekend Update again on April 7, 2018, this time by Alex Moffat.
Mark Zuckerberg's cameo appearance (left) on the January 29, 2011 episode during the opening monologue alongside guest host Jesse Eisenberg (who portrays him in the 2010 drama film The Social Network) and Samberg's impersonation.