 This rotation of guest hosts became a permanent feature when Como left the series in the winter of 1967 (with the "Music Hall" returning as a weekly series that fall), and continued until the series finally ended in 1971.Every show featured a guest entertainer, among them Bob Hope, Liberace, Judy Garland, Eddie Cantor, Groucho Marx, Jimmy Durante, George Jessel, Larry Parks, Dorothy Kirsten, Doris Day, Leo Fuld, Boris Karloff, The Everly Brothers, Margaret Whiting, Cary Grant, Humphrey Bogart, Phil Silvers, Laura Nyro, and Simon & Garfunkel.Each episode also often featured a familiar film actress, such as Marilyn Maxwell.