Dennis Quaid (Jack Hall), Jake Gyllenhaal (Sam Hall), Emmy Rossum (Laura Chapman), Dash Mihok (Jason Evans), Jay O. Sanders (Frank Harris), Sela Ward (Dr. Lucy Hall), Austin Nichols (J. D.), Arjay Smith (Brian Parks), Tamlyn Tomita (Janet Tokada), Perry King (US-Präsident Blake), Kenneth Welsh (US-Vizepräsident Becker), Mimi Kuzyk (US-Außenministerin), Tim Bagley (Tommy), Sasha Roiz (Parker), Russell Yuen (Hideki, japanischer Astronaut), Vitali Makarov (Yuri, russischer Astronaut), Jason Blicker (Paul), Frank Fontaine (Caddy 'Cooper'), Adrian Lester (Simon), Alan Fawcett (Commander Daniels), Chuck Shamata (General Pierce), Richard McMillan (Dennis), J.P. Manoux (L.A. Kameramann), Phillip Jarrett (Campbell), Nestor Serrano (Gomez), Ian Holm (Terry Rapson), Kenneth Moskow (Bob), Glenn Plummer (Luther), Robin Wilcock (Tony), Tony Calabretta (Taxifahrer), Tim Hamaguchi (Taka)