Director:
Duane Tudahl Jon Alon Walz Vincent Kralyevich

Casting:
Stanton Friedman,
Burton Richardson,
William J. Birnes,

USA, 2004

Director:
Hugo Mander

Casting:
Jim Bennett,
David Chang,
Alistair Darling,

UK, 2010

Director:
Paul J. Hildebrandt

Casting:
Bill Nye,
Neil deGrasse Tyson,
Kay Bailey Hutchison,

USA, 2000