Jill Clayburgh

Dr. Katherine "Kate" Gunzinger

Michael Douglas

Ben Lewin

Charles Grodin

Homer

Beverly Garland

Emma

Steven Hill

Jacob Gunzinger

Joan Copeland

Rita

John Gabriel

Hunter

Charles Kimbrough

Jerome

Roger Robinson

Flicker

Jennifer Salt

Maisie

Daniel Stern

Cooperman

Dianne Wiest

Gail

Ron Frazier

Professor

Toshi Toda

Professor

Raf Mauro

Jerry Lanz Man

Michael Alaimo

Man at Restaurant

Ernie Lively

Man at Restaurant (as Ernie Brown)

Noah Hathaway

Homer's Son

Raymond Singer

Rabbi

Bob Feller

Self

Mickey Mantle

Self

Roger Maris

Self

Whitey Ford

Self

James Gammon

Connie Foxworth (uncredited)

Nora Heflin

Maisie (uncredited)

Lou Mulford

Woman at Restaurant (uncredited)

Daniel J. Travanti

Interviewer (uncredited)