Eccentric aliens give a man the power to do anything he wants to determine if Earth is worth saving.
Terry Jones
Director
Peter Hannan
Rob Hemmings
Simon Pegg
Neil Clarke
Kate Beckinsale
Catherine
Robin Williams
Dennis the Dog (voice)
Rob Riggle
Grant
Sanjeev Bhaskar
Ray
Joanna Lumley
Fenella
Marianne Oldham
Rosie
Eddie Izzard
Headmaster
Robert Bathurst
James Cleverill
John Cleese
Chief Alien (voice)
Judy Loe
Canteen Lady
Professor Brian Cox
Self
Meera Syal
Fiona
Emma Pierson
Miss Pringle
David Annen
Newsreader
Mairi McHaffie
Gavin Scott
Terry Gilliam
Nasty Alien (voice)
Eric Idle
Salubrious Gat (voice)
Scientist Alien (voice) / Van Driver
