Stars (in credits order)
George Carlin
SelfarchiveFootage
Richard Dawkins
Self
Aubrey de Grey
Richard Feynman
Jacque Fresco
Bill Hicks
Peter Joseph
Jiddu Krishnamurti
Roxanne Meadows
Ralph C. Merkle
James Randi
Carl Sagan
Alvin Toffler
Neil deGrasse Tyson
Alan Watts