Declan Donnelly
Ray Santilli
Anthony McPartlin
Gary Shoefield
Bill Pullman
Morgan Banner
Götz Otto
Laszlo Voros
Morwenna Banks
Jasmine
Omid Djalili
Melik
Harry Dean Stanton
Harvey
Mike Blakeley
Camera Team
Matthew Blakeley
Camera Team
John Shrapnel
Michael Kuhn
Madeleine Moffat
Nan
John Cater
Maurice
Lee Oakes
Edgar
Perry Benson
Trading Standards Officer
Jimmy Carr
Gary's Boss
Winston Thomas
Zachary
Michael Rouse
Young Harvey
Pam Shaw
Aunty P
David Threlfall
Jeffrey
Andrew Greenough
Preston
Stephanie Metcalfe
Doreen
Jonathan Coy
Museum Director
Ian Porter
Pentagon Officer
Shane Rimmer
Colonel
Naima Belkhiati
French TV Buyer
Miguel Angel Plaza
Mr. Gonzalez
Jeff Harding
CIA Agent
Kevin Breznahan
Junior TV Exec
Martin McDougall
Middle Ranking TV Exec
Lachele Carl
TV News Anchor
Paul Birchard
Senior TV Exec
Sam Douglas
Network President
Adriana Yanez
Stewardess - Argentina
Nichole Hiltz
Amber Fuentes
Luis Soto
Peruvian TV Host
Cristina Piaget
Interviewer
Christina Souza
Stewardess - Mexicana
Bradley Lavelle
NY host
Orson Bean
Homeless Man
Ray Santilli
Self
Gary Shoefield
Self
Luke Brandon Field
Steve (uncredited)
Julia Bridgeman
Geek Girl
Sophia Ellis
UFO Enthusiast
Jonathan Frakes
Self
Flor Kent
Stewardess
Peter Rnic
The Russian Spy
Todd Sherry
Flight Attendant
Peter Willcock
Worker at Gary's Office
Chris Wilson
Alien Fan
Gillian Goodman
Seller