Trivia: Paul Soles, who portrays the character Stanley, was the voice of Dr. Bruce Banner for the 1966 cartoon of The Incredible Hulk. The name "Stanley" is itself likely a reference to Hulk co-creator Stan Lee.
Trivia: All of the entire cast performed their own singing.
Trivia: When Gordon is promoted to Commissioner, Heath Ledger improvised the Joker joining in with the applause.
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 The cars in the scene are rarely seen in the Netherland because they are too outdated to be seen frequently, especially all together.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: According to behind the scenes featurettes, James Hong's father owns a noodle shop. Hong voices Po's father, Mr. Ping, who also owns a noodle shop.
Trivia: When Brennan (played by Will Ferrell) and Dale say, "Say your favourite dinosaur on 3", on the shelf there is a sign that reads 'Hugalo's Pizza', which is the pizza parlor that Will Ferrell worked at in Talladega Nights: The Ballad of Ricky Bobby.
Trivia: Executive Producer Peter Billingsly has a cameo as the ticket agent at the airport. Peter also played Ralphie Parker in the 1983 movie favorite A Christmas Story.
Trivia: In the film's original cut, the Grave Robber was in more sequences directly interacting with Shilo. During editing, in order to get the film to a shorter running length, several of his scenes were cut, and he became more of a narrator than a featured character.
Trivia: The author of the original book, John Grogan, and his family have a cameo appearance. They are looking on as Marley flunks out of obedience school.
Trivia: Originally, Joe Jonas (Shane Gray) kissed Demi Lovato (Mitchie) on the cheek, but it was taken out of the movie.
Trivia: When Agent Strahm is in his head box trap screaming, there is a lot of flash-cutting, including a shot of an outtake of the actor smiling with a towel in the cube and staff around him. Happens exactly at 9:52:370 into the movie, or frame 14203. VERY fast and easy to miss.
Trivia: Following the Disney tradition of hidden Mickey Mouse images, in this film Prince Caspian's vest has many hidden Mickeys, shaped with staples, close to the neck.
Trivia: In the Mayan temple, Indy comments "I have a bad feeling about this." This line was a running gag in George Lucas' Star Wars saga, and was used by Harrison Ford at least once. (01:46:10)
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."