In an interview, Jimmy Fallon said he thought it'd be cool if they had a sketch about Gibbs--b/c he is a big fan of theirs. He said, "He should talk on the show the way he sings songs."
He adds that they made him have a temper for no reason [basically b/c its funny].
Go to Hulu, type in "barry gibbs talk show" in the search box, and look for the playlist (2nd row, 1st column). Its the last video in the playlist.