When Eddie runs into the kitchen to tell the family that he won the Zombo contest. Grandpa has a Playghoul magazine in his hand.
Zombo's makeup pattern was previously used in The Most Beautiful Ghoul in the World (1966) as one of Mrs. Harkness' makeovers.
On the original airing, the TV's studios exterior establishing shot is of 'CBS KNXT', a CBS affiliate since 1951. In 1984, KNXT changed its call letters to the present KCBS-TV.
Zombo is glad to be unmasked, because he's 'made for much better things: Macbeth, Hamlet, My Mother the Car (1965)'. That fantasy sitcom was also created by Allan Burns and Chris Hayward. In 2002, TV Guide proclaimed the show to be the second-worst of all time.
Gary Owens: as the voice of the announcer for the "Zombo" television show. Gary Owens later portrayed the radio announcer character on Rowan & Martin's Laugh-In (1967). where he always had his hand over an ear, as if keeping a headset tightly in place.