Presuming you mean David Letterman, David never hosted The Tonight Show on NBC. He hosted The Late Show on CBS from 1993 to 2015 & Yes, when he retired, Paul Shaffer & the band left the show as well.
Zero, because David Letterman is not on the Tonight Show. Conan is.
David Letterman never hosted The Tonight Show.
David Steinberg
"The Late Night Show with David Letterman" was the talk show that aired after "The Tonight Show with Johnny Carson" on NBC.
David Letterman is the first host of the Late Show on CBS. He originated the show in 1993, when he left NBC.
He is in the Hamlet, Shakespeare, show
Edd Hall left the Tonight Show after 12 years to concentrate on doing movies.
Steve Allen
As of 2013, he is still on the show.
It was either the Tonight Show or David Letterman. It was on "Sex and the City."
Groucho Marx
Brooke Anderson is on maternity leave. She had a beautiful baby girl. You can see pictures of little Kate on Showbiz Tonight's homepage. cnn.com/showbiztonight