Matthew Broderick

Richard Feynman

Patricia Arquette

Arline Greenbaum

Peter Riegert

Mel Feynman

Raffi Di Blasio

Robert

Josh Keaton

David

James Hong

Abacus Adder

Peter Michael Goetz

Dr. Gell-Mann

Kelly Wolf

Nurse Kate

Mary Pat Gleason

County Nurse #2

Joyce Van Patten

Aunt Ruth

James Le Gros

John Wheeler

Zeljko Ivanek

Bill Price

Joshua Malina

Calculator Kid #3

Matt Mulhern

Gate Guard