Scientists Richard Dawkins and Lawrence Krauss travel the globe promoting a scientific worldview and the rational questioning of religious belief.
Richard Dawkins
as Self
Lawrence Krauss
as Self
Ayaan Hirsi Ali
as Self
Woody Allen
as Self
Cameron Diaz
as Self
Ricky Gervais
as Self
Stephen Hawking
as Self
Penn Jillette
as Self
Eddie Izzard
as Self
Werner Herzog
as Self
Daniel C. Dennett
as Self
Sam Harris
as Self
