Joshua Charles Malina (born January 17, 1966) is an American film and stage actor. He is best known for his roles as David Rosen on ABC's drama Scandal, Karl Mixworthy on ABC's Big Shots, President Siebert on CBS's sitcom The Big Bang Theory, Randy Jones in View from the Top, Will Bailey on NBC's drama The West Wing, Jeremy Goodwin on ABC's Sports Night, Bill Feldman in Bulworth. From Wikipedia, the free encyclopedia.