- as Jack Hall
- as Sam Hall
- as Laura Chapman
- as Jason Evans
- as Frank Harris
- as Dr. Lucy Hall
- as J.D.
- as Brian Parks
- as Janet Tokada
- as Parker
- as Terry Rapson
- as Saudi Delegate
- as Venezuelan Delegate
- as Vice President Becker
- as Saudi Translator
- as Tony
- as Paul
- as Bob
- as Taka
- as Luther
- as Simon
- as Dennis
- as Gomez
- as Science Officer
- as Vorsteen
- as Booker
- as Lanson
- as Commander Daniels
- as Veteran Scientist
- as DC Fireman
- as International Reporter, New Delhi
- as Flight Director
- as President Blake
- as Caddy 'Cooper'
- as Secretary of State
- as Scholastic Decathlon Referee
- as Hideki, Japanese Astronaut
- as Tommy
- as L.A. Cameraman
- as General Pierce
- as Campbell
- as Judith
- as Jeremy
- as Elsa
- as Maria
- as Aaron
- as Zack
- as Tina
- as Bernie
- as Jeff Baffin
- as Bart Chopper Reporter
- as Cesar
- as Cabbie 'Crazy Weather'
- as Fox Newscaster #1
- as Misc. Newscaster #1
- as New York Reporter
- as Scientist in Hallway
- as New York Bus Driver
- as Truck Radio Announcer
- as RAF #1
- as RAF #3
- as NY Businessman on Bus
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