John Denver
Episode: 4x01 | Airdate: Sep 20, 1979
Episodes
Linda Lavin
Episode: 4x02 | Airdate: Sep 27, 1979
Shields & Yarnell
Episode: 4x03 | Airdate: Oct 4, 1979
Crystal Gayle
Episode: 4x04 | Airdate: Oct 11, 1979
Kenny Rogers
Episode: 4x05 | Airdate: Oct 18, 1979
Dudley Moore
Episode: 4x06 | Airdate: Oct 25, 1979
Victor Borge
Episode: 4x07 | Airdate: Nov 1, 1979
Beverly Sills
Episode: 4x08 | Airdate: Nov 8, 1979
Liza Minnelli
Episode: 4x09 | Airdate: Nov 15, 1979
Lola Falana
Episode: 4x10 | Airdate: Nov 22, 1979
Phyllis George
Episode: 4x11 | Airdate: Nov 29, 1979
Arlo Guthrie
Episode: 4x12 | Airdate: Dec 4, 1979
Dyan Cannon
Episode: 4x13 | Airdate: Jan 31, 1980
Christopher Reeve
Episode: 4x14 | Airdate: Feb 7, 1980
Lynda Carter
Episode: 4x15 | Airdate: Feb 14, 1980
The Stars of Star Wars
Episode: 4x16 | Airdate: Feb 21, 1980
Dizzy Gillespie
Episode: 4x17 | Airdate: Feb 28, 1980
Anne Murray
Episode: 4x18 | Airdate: Mar 6, 1980
Jonathan Winters
Episode: 4x19 | Airdate: Mar 13, 1980
Andy Williams
Episode: 4x20 | Airdate: Mar 20, 1980
Doug Henning
Episode: 4x21 | Airdate: May 1, 1980
Carol Channing
Episode: 4x22 | Airdate: May 8, 1980
Diana Ross
Episode: 4x23 | Airdate: May 15, 1980
Alan Arkin
Episode: 4x24 | Airdate: May 22, 1980