Steve Allen
Zero, because David Letterman is not on the Tonight Show. Conan is.
David Letterman never hosted The Tonight Show.
Stephanie Birkitt has: Played herself in "Entertainment Tonight" in 1981. Played Herself - Fan of Kyra Sedgwick in "Late Show with David Letterman" in 1993. Played herself in "Late Show with David Letterman" in 1993. Played Herself - On the Phone with Dave in "Late Show with David Letterman" in 1993. Played Herself - Catcher on 53rd Street in "Late Show with David Letterman" in 1993. Played Herself - Hands Out Prizes to Audience in "Late Show with David Letterman" in 1993. Played Herself (2001-) in "Late Show with David Letterman" in 1993. Played Herself - Handing Out Prizes to Audience in "Late Show with David Letterman" in 1993. Played Vicky in "Late Show with David Letterman" in 1993.
Hugh Grant
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.
David Letterman is the first host of the Late Show on CBS. He originated the show in 1993, when he left NBC.
David Letterman was born on April 12, 1947.
David Letterman was born in Indianapolis, Indiana.
David Letterman
David Letterman's birth name is Letterman, David Michael.
"The Late Night Show with David Letterman" was the talk show that aired after "The Tonight Show with Johnny Carson" on NBC.
It was either the Tonight Show or David Letterman. It was on "Sex and the City."