| Episode credited cast: |
 | Alan Arkin | - | Larry |
 | Dick Barnett | - | Himself |
 | Bill Cosby | - | Himself |
| Barbara Dana | - | Phyllis |
 | Walt Frazier | - | Himself |
 | Jim Henson | - | Ernie / Grandmother Happy / Harold Happy (voice) |
 | Will Lee | - | Mr. Hooper |
| Loretta Long | - | Susan |
 | Jerry Nelson | - | Herbert Birdsfoot (voice) |
 | Gary Owens | - | Today's Secret Drawing Announcer (voice) |
 | Frank Oz | - | Bert / Cookie Monster / Helen Happy (voice) |
 | Jackie Robinson | - | Himself |
| Matt Robinson | - | Gordon |
 | Caroll Spinney | - | Oscar the Grouch / Big Bird (voice) (as Carroll Spinney) |
hd.thomson-multimedia