John Davidson and Debbie Reynolds (S04E12)

S04E01 Jim Nabors S04E02 Cass Elliot and Pat Paulsen S04E03 Nanette Fabray and Steve Lawrence S04E04 Eydie Gormé, Joan Rivers S04E05 Ken Berry and Nanette Fabray S04E06 Lucille Ball and Mel Torme S04E07 Donald O'Connor and Bernadette Peters S04E08 Mama Cass Elliot, Emmett Kelley, & Ricardo Montalban S04E09 Juliet Prowse S04E10 Ross Martin and Martha Raye S04E11 Dyan Cannon and Paul Lynde S04E12 John Davidson and Debbie Reynolds S04E13 Don Rickles and Mel Torme S04E14 Julie Budd, Durward Kirby, and Steve Lawrence S04E15 Robert Goulet, Rich Little, Pat Carroll S04E16 Art Carney, Pat Carroll S04E17 Jerry Lewis and Leslie Uggams S04E18 Michele Lee and Mel Torme S04E19 Martha Raye, Violette Verdy, & Edward Villella S04E20 Rita Hayworth, Jim Bailey, Glen Campbell S04E21 Totie Fields, Ken Berry S04E22 Chita Rivera, Bob Newhart S04E23 Tim Conway, Pat Carroll, Karen Wyman S04E24 Mike Douglas and Bernadette Peters S04E25 Eileen Farrell, David Frost, & Marilyn Horne S04E26 Paul Lynde/Nanette Fabray