The end of his opening monologue included a musical number ... He took over from David Letterman on Late Night in 1993 and remained in the role until 2009 when he moved to the Tonight Show.

Ellen DeGeneres hosted the 2014 Oscars and brought a relaxed and friendly vibe ... could mix comedy with genuine moments and keep the show fun and down-to-earth. David Letterman hosted the Oscars in ...