Plot: Guests: --Diana Ross & the Supremes - ""The Impossible Dream,"" ""You're Nobody ‘till Somebody Loves You"" and ""No Matter What Sign You Are"" --Ed Ames - ""Son Of A Travelin' Man"" & ""Windmills Of Your Mind"" --Lana Cantrell - ""Life Is"" & ""Stay"" --The Muppets --David Frye (comedian, doing impressions of celebrities) --Irwin C. Watson (stand-up comedian)