Pop singer Jaye P. Morgan played herself as one of Oscar's many girlfriends. For Felix, Opera singer Marilyn Horne played a shy, mousy co-worker of Oscar (named "Jackie"); opera singers Martina Arroyo and Richard Fredricks appeared as themselves. Other celebrities appearing as themselves included Edward Villella, Monty Hall, Richard Dawson, Wolfman Jack, David Steinberg, Hugh Hefner, Rodney Allen Rippy, John Simon, Bubba Smith, Deacon Jones, and Allen Ludden and Betty White (married in real life). In one episode, noted tennis frenemies and one-time real-life competitors Bobby Riggs and Billie Jean King appeared as themselves.