Doris Day

Character: Jennifer Nelson

Rod Taylor

Character: Bruce Templeton

Arthur Godfrey

Character: Axel Nordstrom

John McGiver

Character: Ralph Goodwin

Paul Lynde

Character: Homer Cripps

Edward Andrews

Character: Gen. Wallace Bleecker

Eric Fleming

Character: Edgar Hill

Dom DeLuise

Character: Julius Pritter

Dick Martin

Character: Zack Molloy

Elisabeth Fraser

Character: Nina Bailey

Alice Pearce

Character: Mabel Fenimore

George Tobias

Character: Norman Fenimore

Ellen Corby

Character: Anna Miller

Dee J. Thompson

Character: Donna

Robert Vaughn

Character: Napoleon Solo (uncredited)

Regina Carrol

Character: Minor Role (uncredited)

Theo Marcuse

Character: Gregor

Carolyn Williamson

Character: Party girl

Rachel Romen

Character: Reporter (uncredited)

George Carlin

Character: Unknown (uncredited)

George Cisar

Character: Fat Man (uncredited)

John Dennis

Character: Policeman (uncredited)

Florence Halop

Character: Lady on Telephone (uncredited)

Frank Parker

Character: Engineer (uncredited)

Christopher Riordan

Character: Party Guest / Computer Plant Worker (uncredited)

Tom Anfinsen

Character: Party Guest (uncredited)

Spencer Chan

Character: Chef (uncredited)

George Ford

Character: Party Guest (uncredited)

James Gonzalez

Character: Party Guest (uncredited)

Theo Marcuse

Character: Gregor - Spy with Cigar (uncredited)

Hans Moebus

Character: Party Guest (uncredited)

Joe Ploski

Character: Husband (uncredited)

Murray Pollack

Character: Party Guest (uncredited)

Bernard Sell

Character: Party Guest (uncredited)