Guest Stars Jessica Belkin as Carolyn Larkin Gerald Downey as Mr. Larkin Alex MacNicoll as Jerry Ross Madison Lawlor as Joan Larkin Samuel Faraci as Benji Maxwell Acee Donovan as Davy Fenstermacher Co Starring Paul Linke as Grandpop Mary Linda Phillips as Grandmom Jax Daniel Morgan as Tom Larkin Noelle E Parker as Beverly Larkin Uncredited Kurt Fuller as Dr. Zahn Jethro Posz as Polio Kid