Trivia: In the last scene, when everyone meets to play poker, Catherine Zeta Jones throws her hands up to celebrate a win and falls out of her chair for real.
Trivia: In the opening scene where Mia is introduced and waves to the crowd from atop a staircase, (wearing a big red dress) she accidentally flings a bracelet off her wrist, where a footman catches it. That is the same footman who catches the snail Julia Roberts flings in Pretty Woman, and he uses the same line "It happens all the time".
Trivia: According to director James Wan on the director's cut DVD commentary, the major plot twist of the film, from Adam listening to Zep's tape to Jigsaw standing up, was one continuous shot, and was also the only shot they did of the sequence.
Trivia: Dr. Curt Connors, Peter's one-armed teacher in the film, is the man who will later become The Lizard, one of Spider-Man's longest running enemies.
Trivia: The two old men near the end, talking about it being "old school" are voiced by Frank Thomas and Ollie Johnston, two Walt Disney animators who worked on such classics as Bambi and Cinderella.
Trivia: While filming the knife fight scene, Thomas Jane accidentally stabbed Kevin Nash.
Trivia: At the ranger's office when the security guard was stealing the medical supplies, you see a cameo of M. Night Shamalayan in the reflection of the glass.
Trivia: One should really stay to the very end of the credits, as Johnny Depp (Mort) sings an amusing little tune.
Trivia: Before the film was released, N.A.S.A. sent a memo out to all of its employees stating that they were not allowed to comment on the likelihood of the events portrayed in this movie.
Trivia: Often times when a movie is distributed the name of the movie on the actual can is changed or altered to prevent piracy. The name on this movie was "Hal," a reference to "2001: A Space Odyssey" (1968).
Trivia: When Ben is talking to Riley in front of the Lincoln Memorial, you see a long pool behind them. This pool is filled with computer generated water, because the pool was drained at the time of shooting.
Trivia: The Chinese tattoo on Bill's arm reads Wo de shi jie, which means "My world."
Trivia: Ryan Reynolds gained 11kg (or roughly 24lbs) of muscle for his role as Hannibal King.
Trivia: The photo of Nicky in her confidential file is actually a promotional shot taken of Julia Stiles (Nicky) in 1999 for her movie "10 Things I Hate About You."