The QUANTUM LEAP episode that started about 15 minutes ago has as guest stars Paul Sand and John Cullum. Scott Bakula's character Sam leaps into the body of the understudy to Cullum who is a musical theater star on the decline due to his drinking. Ernie Sabella has a role as the actor playing Sancho Panza to Cullum's Man of La Mancha. The producers must have paid a bit of coin for the rights for Cullum to sing, so far two songs, Dulcinella (I'm guessing the title) and The Impossible Dream. Now he' singing another song as he's playing inebriated.
Cullum's a favorite of mine. That must be fun.
Cullum was quite good. The episode must have been a favor for Bakula who I understand was a musical theater actor/singer.
Also, Michelle Pawk (who has recorded for BK) and Janine Turner (who starred on "Northern Exposure" with John Cullum) were also in this episode.