 Letterman left "Late Night" in 1993 for  _"Late Show with David Letterman" (1993)_ (qv) on CBS when NBC give  the "Tonight Show" to Jay Leno following the departure of Johnny  Carson in 1992. However, NBC refused to allow Letterman to use  elements that made the show famous such as "Larry Bud Melman" or  "The Top Ten List". NBC claimed those bits were their "intellectual  property". "The Top Ten List" was renamed "Late Show Top Ten" and  "Larry Bud Melman" used his real name, Calvert DeForest.