I like his version of the Tom Waits song The Piano Has Been Drinking, a live version of which is on YouTube

Dan Hicks sings The Piano Has been Drinking written by Tom Waits. Taped at the Vancouver Island Music Fest, the crowd loved it.

Dan Hick "The Piano Has Been Drinking"

That song appears on the Hicks album Beatin' The Heat. The album has a number of guest appearances, including one by Waits