Zach Galligan as Adam Beckett

Apollonia van Ravenstein as Mara Hofmeier

Bill Murray as Ted Breughel

Sam Jaffe as Father Knickerbocker

Imogene Coca as Daisy Schackman

Clarice Taylor as Lu

Anita Ellis as Aunt Anita

Dan Aykroyd as Buck Heller

Paul Rogers as Hugo

Leora Dana as Joyce

Lauren Tom as Eloy

Mort Sahl as Uncle Mort

Eddie Fisher as Himself

Jan Tříska as Swedish Architect

Rosemary De Angelis as Helen Flagella

John Garson as Maurice Blaget/Conductor

Bert Wood as Hotelier

Michael Kimak as Mr. Boyle

King Donovan as Lunartini Husband

Dortha Duckworth as Lunartini Wife

Avon Long as Alphacruiser Steward

Andrea Coles as Freida Shimkus

Kiya Ann Joyce as Lunartram Guide

Tiger Haynes as Mr. Brown

Dr. Bronner as Himself

Edwin Cooper as Carnegie Hall Old Timer

Walt Gorney as Stage Manager

Raynor Scheine as Hillbilly

Ida Bernardini as Train Mother

Maria Piccininni as Child

Milton Seaman as Businessman

Charles Bruce Millholland as Central Park Bum

Erick Avari as Toulouse Lautrec

Joanne Garahan as Art Test Model

Peter Christensen as Espresso Waiter

Marc Alderman as German on Treadmill

Calvert DeForest as Lunarcruiser

Evelyn Metro as Lunarcruiser

Alfred de la Fuente as Lunarcruiser

Polly Logan as Lunarcruiser

Drummond Erskine as Lunarcruiser

Joan Arliss as Lunarcruiser

Sonia Zomina as Lunarcruiser

Moultrie Patten as Skylounge Pianist

China Chen as Lunar Maiden

Susie Chin as Lunar Maiden

Lucia Hwong as Lunar Maiden

Faye Mar as Lunar Maiden

Joanna Pang as Lunar Maiden

Atsumi Sakato as Lunar Maiden

Ingrid Wang as Lunar Maiden

Andreas Katsulas as Lunar Shopping Observer

Frederick Coffin as Lunar Shopping Observer

Lawrence Tierney as Carriage Driver

Bob Balaban as Guy with Sunglasses in Espresso Bar