Frederick Banting

饰：Himself

劳伦斯·M.克劳斯

Lawrence M. Krauss

饰：自己

查尔斯·奥斯古德

Charles Osgood

饰：Self - Narrator,5 episodes, 1998,

加来道雄

Michio Kaku

饰：Self - Theoretical Physicist,1 episode, 1998,

蒂姆·伯纳斯-李

Tim Berners-Lee

饰：Self - Computer Scientist,1 episode, 1998,

Peter Galison

饰：Self - Historian,1 episode, 1998,

Brendan Gill

饰：Self - Author,1 episode, 1998,

Leon Lederman

饰：Self - Physicist,1 episode, 1998,

大卫·哈伯斯塔姆

David Halberstam

饰：Self - Author,1 episode, 1998,

Malcolm S. Longair

饰：Self - Physicist,1 episode, 1998,

Jocelyn Bell Burnell

饰：Self - Astrophysicist,1 episode, 1998,

Sallie Baliunas

饰：Self - Astrophysicist,1 episode, 1998,

Alan Kraut

饰：Self - Historian,1 episode, 1998,

西格蒙德·弗洛伊德

Sigmund Freud

饰：Self,unknown episodes, (archive footage)

Edwin Hubble

饰：Self,1 episode, 1998, (archive footage)

Charles Best

饰：Self,unknown episodes, (archive footage)

尼尔·德格拉塞·泰森

Neil deGrasse Tyson

饰：Self - Astrophysicist,1 episode, 1998,

菲利普·莫里森

Philip Morrison

饰：Self - Physicist,1 episode, 1998,

Elaine Showalter

饰：Self - Historian,1 episode, 1998,

Walter Lewin

Walter Lewin

饰：Self - Physicist,1 episode, 1998,

Michael Bliss

饰：Self - Historian,1 episode, 1998,

Henry Ford

Henry Ford

饰：Self,unknown episodes, (archive footage)

Alexander Fleming

饰：Self,1 episode, 1998, (archive footage)

George Ellery Hale

饰：Self,unknown episodes, (archive footage)

J.B. Collip

饰：Self,unknown episodes, (archive footage)