Trivia: In the scene where Anna is outside the gates during "For The First Time in Forever", you can see the backs of Flynn and Rapunzel from "Tangled".
Trivia: The real Marcus Luttrell appears several times throughout the movie: he spills the coffee and tells the new guy to clean it up; he's in the operation briefing and shakes his head at the rules of engagement being read; and he's on board the Chinook helicopter when it is shot down.
Trivia: Once again, Stan Lee makes his usual cameo. This time, he appears as a judge at the Christmas pageant. (01:03:50)
Trivia: Peter Capaldi, the new Doctor Who for 2014, is listed in the credits as W.H.O. Doctor. Just a fun coincidence, as the roles are too far apart to have been planned, but worth a look.
Trivia: As Kirk, Spock, and Uhura head to the shuttle bay for their mission to Kronos to capture Khan, Sulu orders crew to prepare the vessel that was confiscated in the Mudd incident. This is a reference to Harry Mudd, a roguish character who appeared in the original Star Trek series in the episodes titled,"I, Mudd" and "Mudd's Women." Harry Mudd, played by Roger C. Carmel, was the only non-regular character to appear in more than one episode on the original Star Trek series. Carmel was slated to reprise the role in Star Trek: TNG, but he died before the episode could be filmed. (00:44:25)
Trivia: The bad guys chasing the Presidential limo around with a minigun-containing SUV might seem like movie fiction, but that's actually part of the presidential motorcade - two such SUVs, each containing a Dillon Aero Gatling gun.
Trivia: When The Joker interrupts the ceremony and shows the video of him blowing up the building, there's a scene where he hits the detonator a few times before the building blows up. This is a scene paying homage to what happened in The Dark Knight when there was an actual unplanned delay during filming of the explosion going off during the blowing up of the hospital.
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: Stan Lee makes his usual cameo, this time as a patient at the asylum where Selvig is being held.
Trivia: After the ending credits, there is an additional scene showing an alien invasion appear from a temporal rift. This is likely an homage to the upcoming movie, Justice League: War, which is the story of the Justice League first forming in order to combat an alien invasion. (01:20:50)
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: The painting with Seth and James' name were painted by James Franco. He also helped paint Freaks and Geeks.
Trivia: SPOILER! There is a mid credits scene that shows Logan going through airport security 2 years after the end of the movie, where he encounters Professor X and Magneto, who recruit him for a new mission that will be in the film X-Men: Days of Future Past.
Trivia: After Storm Shadow kills the last ninja guarding Zartan, Zartan knocks over a bunch of crates. Right after he does this, pay attention to the wall behind Zartan: you can see the logo there of the Umbrella Corporation, from the Resident Evil series. (01:42:25)
Trivia: The Formula 1 cars you see in this film are Formula 3 vehicles with fake F1 bodywork. They were used because Daniel Bruhl and Chris Hemsworth were not allowed to drive real Formula 1 cars.
Trivia: At the start when the UNIVERSAL writing comes around the Earth, the TET can be seen in orbit.
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: Crimson Typhoon was originally planned to have four arms and be piloted by female quadruplets. However, the producers couldn't find any.