Ira Flatow
— Self - Host
David G. Bouvier
— Walter Brattain
Richard O'Rourke
— John Bardeen
Elliot Cohan
— Ralph Bown
Gary Henoch
— Bill Shockley
Paul Horn
— Reporter
Joel Shurkin
— Self
Phil Foy
— Self
Frederick Seitz
— Self
Walter Brown
— Self
Harry Sello
— Self
Ian Ross
— Self
Michael Riordan
— Self
Gordon Moore
— Self
John Pierce
— Self
Betty Sparks
— Self
Nick Holonyak
— Self
Charles Stewart
— Self
John Bardeen
— Self (archive footage)
Walter Brattain
— Self (archive footage)
Bill Shockley
— Self (archive footage)