Even coming back to TV could not get David Letterman and Conan O'Brien to shave their beards. Letterman looks like what Santa Claus looks like after Christmas is done and puts on his day job attire while Conan O'Brien looks like he is wearing a fake beard. Guys you are back on TV…shave. Jimmy Kimmel did and he made Guillermo shave his goatee off during the show.