The Earth Day Special (1990)

(Mother Earth)

(Charles McIntyre)

(Walter Samson)

(Nathan Thurm)

(Kim)

(Hellen)

(Paula)

(Vic)

(Vic's Buddy)

(Vic's Buddy)

(Vic's Buddy)

(Coach Stewart)

(Bartender)

(Doctor)

(Doctor)

(Hospital Director)

(Every Lawyer)

(Everyman)

(Concerned Citizen)

(Weekend Update Anchor)

(Murphy Brown)

(Elon Spengler)

(Dr. Emmett L. Brown)

(Doogie Howser M.D.)

(Dr. Vinny Boombatz)

(Sam Malone)

(Rebecca Howe)

(Woody Boyd)

(Norm Peterson)

(Cliff Clavin)

(Dr. Frasier Crane)

(Dr. Cliff Huxtable)

(Clair Huxtable)

(Denise Huxtable)

(Theo Huxtable)

(Vanessa Huxtable)

(Rudy Huxtable)

(Olivia Kendall)

(Fresh Prince)

(Dorothy Zbornak)

(Rose Nylund)

(Blanche Devereaux)

(Sophia Petrillo)

(Al Bundy)

(Peggy Bundy)

(Kelly Bundy)

(Bud Bundy)

(Marcy D'Arcy)

(Self)

(Kid [Kid 'N Play])

(Play [Kid 'N Play])

(Bugs Bunny / Porky Pig / Tweety (voice))

(Kermit the Frog (voice))

(Robin the Frog (voice))

(Old Frog (voice))

(Crocodile (voice))

(Lizard (voice))

(Additional Muppets (voice))

(Additional Muppets (voice))

(Guard)

(Self)

(Self)

(Self)

(Self)

(Self)

(Self)

(Self)

(Self)

(Self)

(Self)

(Self)

(Self)

(Self)

(Self)

(Self)

(Self)

(Self)

(Self)

(Self)

(Self (uncredited))

(Self (uncredited))

(Self (uncredited))

(Self (uncredited))

(Self (uncredited))

(Weekend Update Announcer (voice) (uncredited))