All 11 shows with original commercials on 6 dvds -

3/4/79 - Lucille Ball & Mike Douglas
3/11/79 - Bea Arthur
3/18/79 - Bonnie Franklin & Henny Youngman
3/25/79 - Dick Van Dyke
4/1/79 - Gene Kelly
4/8/79 - Johnny Mathis
4/15/79 - Ken Howard
4/22/79 - Hal Linden
4/29/79 - Linda Lavin
5/6/79 - Nancy Walker
5/13/79 - Paul Williams

The Mary Tyler Moore Hour starred Moore as Mary McKinnon, the host of a fictional program, The Mary McKinnon Show. McKinnon was an established star of comedy who could also sing and dance as needed (any resemblance to Moore herself was, of course, purely intentional). Also seen were her personal secretary and assistant, Iris Chapman ( Joyce Van Patten), her producer, Harry Sinclair ( Michael Lombard), her page, Kenneth Christy ( Michael Keaton), her maid Ruby ( Dody Goodman), and her head writer Mort Zimmick ( Bobby Ramsen). In addition to these regulars, major stars appeared as themselves in the guise of being guest stars on the fictional McKinnon program. Some of these included Lucille Ball, Beatrice Arthur, Nancy Walker, Linda Lavin, Bonnie Franklin, Ken Howard, Mike Douglas, Gene Kelly, Johnny Mathis and, perhaps most notably, long-time former co-star Dick Van Dyke.