Richard Feynman

Self (archive footage)

Joan Feynman

Self - Sister

Freeman Dyson

Self (archive footage)

Sean Carroll

Self - Theoretical Physicist, CALTECH

Leonard Mlodinow

Self - Author of 'Feynman's Rainbow'

Carl Feynman

Self - Son

Michelle Feynman

Self - Daughter

Richard Davies

Self - Physicist and friend

Marcus Chown

Self - Author and former Feynman student

Jirayr Zorthian

Self - Artist and friend

Danny Hillis

Self - Computer designer and friend

Albert Hibbs

Self - Mathematician and friend (archive footage)

Donald Kutyna

Self - General, US Airforce 1957-1992

Larry Mulloy

Self - NASA (archive footage)

Daniela Nardini

Narrator (voice)

Christopher Riley