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)

Hal Yates

D.W. Griffith

Benjamin Stoloff