Quite possibly the biggest star that television has ever produced, Johnny Carson was seen by more people on more occasions than anyone else in American history. Over the course of his 30-year run on The Tonight Show, Carson interviewed 23,000 guests in 4,531 episodes. Yet he remained a very private man who rarely gave interviews himself. With unprecedented and unrestricted access to Johnny's personal and professional archives, multiple Emmy and Peabody award winning AMERICAN MASTERS series and two-time Emmy-winning filmmaker Peter Jones explore the life and career of one of the most beloved yet enigmatic icons in American entertainment history. Narrated by two-time Oscar-winner Kevin Spacey, Johnny Carson: King of Late Night features more than 40 original interviews, including David Letterman, Jay Leno, Conan O'Brien, Jerry Seinfeld, Ray Romano, Drew Carey, Garry Shandling, Steve Martin, Jimmy Fallon, Ellen DeGeneres, Arsenio Hall, Mel Brooks, Dick Cavett, Carl Reiner, Don Rickles, Bob Newhart, Angie Dickinson, Joan Rivers, Doc Severinsen and other members of The Tonight Show staff.