Trivia: The person who introduces Leonardo DiCaprio onstage at the end of the film is the real Jordan Belfort.
Trivia: Early in production, the film was under the working title "Die Hard 24/7", leading many media outlets and fans to speculate that the film was to be a crossover with another popular Fox property- the television series "24." (An unnamed studio insider even told a popular movie-reporting site that Fox had been tinkering with the idea very early in production to try and shake-up and revitalize both franchises.) The title and concept of the film were subsequently changed.
Trivia: When Brian goes undercover as a prison inmate to talk to Braga, his fake name is T. Bridges. Bridges is the real last name of Ludacris who plays Tej, and T is the first initial of Tyrese Gibson who plays Roman. (00:55:25)
Trivia: Ryan Gosling only has 17 lines of dialogue in the entire film.
Trivia: At the beginning of the attack in the graveyard, just after Hit Girl is knocked out, the gravestone says 'Rest in Piece' rather than 'Peace'. (01:17:55)
Trivia: The events of the film are inspired by and loosely based on the real-life "Abscam" - an FBI sting operation during the late 1970's and early 1980's.
Trivia: When a motorcyclist trips over a rock during a chase scene, he yells a Wilhelm scream.
Trivia: When Keller looks at the newspaper detailing Bob Taylor's suicide whilst at Holly's house, the reporter who wrote the article is called Aaron Guzikowski. Aaron Guzikowski is also the name of the movie's screenwriter. (01:51:15)
Trivia: In the batcave, the batmobile lifted by Bruce is the design from Tim Burton's Batman and Batman Returns films.
Trivia: The Boeing 747 (G-BDXJ) seen in the background during the climactic scene at the airport is the same one used in Casino Royale to depict the prototype aeroplane at Miami. It is also seen in many episodes of the UK television series Top Gear.