帕特丽夏·阿奎特

Patricia Arquette

饰：Arline Greenbaum

桃丽·布雷纳

Dori Brenner

饰：Tutti Feynman

杰弗瑞·福斯

Jeffrey Force

饰：Young Richard

彼得·里格特

Peter Riegert

饰：Mel Feynman

David Drew Gallagher

David Drew Gallagher

饰：Harold

Raffi Di Blasio

饰：Robert (as Raffi DiBlasio)

乔舒亚·基顿

Joshua Keaton

饰：David (as Joshua Wiener)

吴汉章

James Hong

饰：Abacus Adder

Emerson Tran

Emerson Tran

饰：Kid

Melissa DeLizia

饰：Young Joan

John Hammil

饰：County Dr. #1

Jack Lindine

饰：Mr. Greenbaum

Helene Moore

Helene Moore

饰：County Nurse #1

Carl Strano

Carl Strano

饰：County Dr. #2

玛丽·帕特·格里森

Mary Pat Gleason

饰：County Nurse #2

Horton Foote Jr.

Horton Foote Jr.

饰：Neighborhood Doctor

彼得·迈克尔·戈茨

Peter Michael Goetz

饰：Dr. Gell-Mann

乔伊丝·冯·派特

Joyce Van Patten

饰：Aunt Ruth

Mary Kay Wulf

Mary Kay Wulf

饰：Aunt Rose

詹姆斯·勒格罗

James LeGros

饰：John Wheeler

泽利科·伊万内克

Zeljko Ivanek

饰：Bill Price

Laurence Haddon

Laurence Haddon

饰：Family Doctor

Tom Kurlander

饰：Driver

马克·伯恩汉姆

Mark Burnham

饰：Passenger #1

古盖·格莱斯

Googy Gress

饰：Passenger #2

约书亚·戈丁

Joshua Goldin

饰：Passenger #3

埃里希·安德森

Erich Anderson

饰：Gil

马特·穆尔赫恩

Matt Mulhern

饰：Gate Guard

Drew Ebersole

Drew Ebersole

饰：Calculator Kid #1

John Patterson

John Patterson

饰：Stan Ivanek

Damion Scheller

饰：Calculator Kid #2

约书亚·马林纳

Joshua Malina

饰：Calculator Kid #3

Demetrius Navarro

Demetrius Navarro

饰：Calculator Kid #4

Cosimo Sherman

Cosimo Sherman

饰：Garo

Geoffrey Nauffts

饰：Rob

大卫·巴雷亚

David Barrera

饰：Chepa

Kelly Wolf

Kelly Wolf

饰：Nurse Kate

Patrick James Clarke

饰：Strong Fellow

科克福克斯

Kirk Fox

饰：Mechanic

玛丽安妮·穆勒雷尔

Marianne Muellerleile

饰：Nurse Gracie

Michelle Feynman

Michelle Feynman

饰：Sewing Girl on Train

克里斯汀·达蒂洛

Kristin Dattilo

饰：Joan Feynman (as Kristin Dattilo Hayward)

比尔 柏兰德

Bill Bolender

饰：Isadore Rabi

Corbitt Smith

Corbitt Smith

饰：Henry

马修·布罗德里克

Matthew Broderick

饰：Richard Feynman

乔什·基顿

Josh Keaton

饰：David

Jason Menz

饰：演员 Actor/Actress