He's appeared on Conan O'Brien and has hosted Comedy Central Presents on two occasions. In addition to his stand-up Barker has been involved in several projects, including a web series called Arj and Poopy, an animated show about a man and his gaseous cat, as well as an off-broadway parody of The Vagina Monologues called, The Marijuana-Logues. He has also made appearances on television comedies, including Flight of the Conchords.