Many stars from the cast of the show Rowan & Martin's Laugh-In (1967) guest star as the guests at the party.
Although not included in the credits, the party crasher Mummy was played by Ringo Starr.
Jo Ann Worley, Ruth Buzzi, Gary Owens, Allan Sues are actors from the old Rowan and Martin 's Laugh In show and are guests and the hostess at the Halloween party.
A frightened Salem wheezes in terror trying to call out Sabrina's name, imitating actor Lou Costello.