The Earth Day Special

Dan Aykroyd

Vic's Buddy

Candice Bergen

Murphy Brown

James Brolin

Doctor

Downtown Julie Brown

Self

Jeff Bergman

Bugs Bunny / Porky Pig / Tweety (voice)

Chevy Chase

Vic's Buddy

Kevin Costner

Bartender

Rodney Dangerfield

Vinny Boombatz

Geena Davis

Kim

Dana Delany

Doctor

Danny DeVito

Vic

Michael Douglas

Self

Jane Fonda

Hellen

Morgan Freeman

Walter Samson

Will Smith

Fresh Prince

Neil Patrick Harris

Doogie Howser

Heavy D

Self

Dustin Hoffman

Every Lawyer

Ice-T

Self

Magic Johnson

Self

Quincy Jones

Self

Michael Keaton

Charles McIntyre

Christopher Reid

Kid

Christopher Martin

Play

Christopher Lloyd

Emmett Brown

Jack Lemmon

Coach Stewart

Melanie Mayron

Self

Bette Midler

Mother Earth

Dennis Miller

Weekend Update Anchor

Rick Moranis

Vic's Buddy

Jim Henson

Kermit the Frog (voice)

Jerry Nelson

Robin the Frog (voice)

Dave Goelz

Old Frog (voice)

Richard Hunt

Crocodile (voice)

David Rudman

Lizard (voice)

Kevin Clash

Muppets (voice)

Steve Whitmire

Muppets (voice)

Edward James Olmos

Hospital Director

Rhea Perlman

Paula

Queen Latifah

Self