Does it have to be from a show??? If not, Tell Him, the Celine dion and streisand duet is very impressive. I'll have a think on show duets, can't think of any of the top of my head apart from the usual ones like, I Still Believe, from saigon. I will think on it.
How about "I will Never Leave you" from Side Show. In His Eyes from Jekyll and Hyde. Sisters, from WHite Christmas. OH the lullabye from Peter Pan, that Peter and Wendy sing to the children, "Long Ago and Far Away"
How about "Two's Company" from "Magic Show"? I think that's a neat song.
"A birdcage I plan to hang. I'll get to that someday. A birdcage for a bird who flew away...Around the world."
"Life is a cabaret old chum, only a cabaret old chum, and I love a cabaret!"-RIP Natasha Richardson-I was honored to have witnessed her performance as Sally Bowles.