Barbieri began writing for Jimmy Kimmel Live! in 2003, and in 2004 started appearing on the show as the character Jake Byrd. Byrd is good-natured man obsessed with celebrities, and his bits involve him satirizing excessive media attention to celebrity spectacles such as the Michael Jackson trial or the arrest of Paris Hilton. Byrd usually interacts with the fans while they are being interviewed by the media or inserts himself into press conferences. He has successfully fooled major media outlets into thinking he is a real person, including The New York Times, who quoted him in a May 1, 2004 article about the Michael Jackson trial, before running a redact five days later noting that he was a character. Despite this, the Times wrote again about him, as if he were a real person, during the 2007 O. J. Simpson robbery case.