Bill Cosby (guest host, appearing with a band) - "Ursulena (With Your Washing Machina)," "I've Got to Be Strong" (sung by member of his group) & "I Lost My Baby At the Dance Last Night" --David Brenner (stand-up comedian) - jokes about airplanes; the moon shot; dating in New York City and King Kong --Ray Charles - "Early in the Morning" --Fanny - "All Mine" & "Last Night I Had a Dream" --Waylon Jennings - "Lovin' Her Was Easier," "Good Time Charlie's Got the Blues" & "Only Daddy That'll Walk the Line" --Billy Preston - "Will It Go Round in Circles" & "Outa-Space" --Steely Dan - "Reelin' in the Years" --Taj Mahal - talks about "Sounder," plays "Cheraw" on banjo & sings "Texas Woman Blues"