The Smothers Brothers Comedy Hour

Last episode. Features guest stars humming the theme song: Harry Belafonte, Victor Borge, Ray Charles, Donovan, Nanette Fabray, Barbara Feldon, David Frye, George Gobel, Jack E. Leonard, Liberace, Jackie Mason, Bob Newhart, Pat Paulsen, Tony Randall, Nancy Sinatra, Kate Smith, Andy Williams and Jonathan Winters.