Jack Paar
Himself - Host

Leon Errol
Leon Errol (segment "He Forgot To Remember") (archive footage)

Liberace
Himself

Red Buttons
Himself

Dorothy Granger
Vivian Errol (segment "He Forgot To Remember") (archive footage)

Jerry Murad
Himself - Leader of the Harmonicats (as Jerry Murad's Harmonicats)

Mamie Van Doren
Blonde in theater

Byron Foulger
Dr. Twitchell

Elaine Riley
Barbara

Harry Harvey
Leon's Fishing Buddy

Emory Parnell
Older Cop

Bess Flowers
Party Extra (segment "He Forgot to Remember") (archive footage) (uncredited)