In comic books
Larry King has made several appearances in comic books, from several different companies. He's most often seen as the host of his own show.
Larry King Live
Larry King has had his own show on "CNN" for over 40 years.
Appearances in Film
Larry King has appeared in the first Ghostbusters film.
Stan Lee makes a cameo in the film Iron Man 2. He wears clothes similar to those Larry King often wears and is greeted by Tony Stark/Iron Man as "Larry King".