Trivia: The Noordermarkt scene in Amsterdam was not really shot there. In fact it wasn't shot in the Netherlands at all. The Noordermarkt in the film looks nothing like the real Noordermarkt, and more like an Asian or Indian market. The noise of people talking in the background does not resemble anything close to Dutch. The cars in the scene are rarely seen in the Netherland because they are too outdated to be seen frequently, especially all together. At timecode 42:30 you can see a police car with "POLICE" written on the side of it. However, in real life, Dutch police cars do not use the English word for police. "Politie" would have been the correct word, but even then the police car would not be convincing, as official police cars look entirely different. Finally, the firetruck appearing later in the scene is not a type used in the Netherlands, but appears to be an American Pierce Lance truck with Dutch fire engine stickers on it. Dutch firetrucks are usually of European make: DAF, MAN or Mercedes. (00:41:50 - 00:43:30)
Trivia: Notice they don't play the lyrics with the "Iron Man" song in the closing credits. That's because the Black Sabbath song was not about the comic book Iron Man. There are many theories about what the song means, but the most popular is that it is about a man who travels to the future and sees the apocalypse. They couldn't use the lyrics to describe the Iron Man in the movie: He was turned to steel - In the great magnetic field - Where he traveled time - For the future of mankind. Now the time is here - For Iron Man to spread fear - Vengeance from the grave - Kills the people he once saved.
Trivia: When the credits have finished rolling there is a garbled radio transmission of what sounds like Rob saying "Help us." But when played in reverse you can clearly hear him saying "It's still alive."
Trivia: At one point in the movie, when the Chief is talking to the President, the President says "nucular weapons" once or twice. Frustrated, the Chief says something to the effect of, "For the last time, it's nuclear." This is an obvious jab at President George W. Bush, who was notorious for invariably saying "nucular" instead of "nuclear" when giving speeches.
Trivia: There were several Secret Service consultants on this film to give realism to the action. However, they were unhappy with the final product as it seemed that the kidnappers were able to get to the President without all that much trouble, even if they did have an insider.