We've previously documented that John Goodman had made what was his singing debut in David Byrne's "True Stories" in 1986. Nine years later, in an episode of Roseanne, John warms up for a later gig with the Blues Brothers.
Blues Traveler are the guest stars in the episode, "Of Mice & Dan". Lead singer/harmonica player John Popper plays an old friend of Dan Conner (Goodman), and invites Dan on stage during a concert. The result? Goodman knocks it out of the park again with a rendition of "Sweet Home Chicago".