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: In the beginning of the scene in the Master of Laketown's house, Alfrid tries to empty a chamberpot through the open window. During this, the window half closes, so much of the contents of the chamberpot splash on the inside of the window and windowsill. In the extras of the Extended edition it is told that this happened during the first take, and the scene was reshot many times. Nevertheless, the first take ended up in the final cut. (01:11:35)
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: 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: Final film of famed production designer Allan Cameron. Cameron got his start on television, and went on to be well-known for his work in sci-fi, action and fantasy films, such as 1999's "The Mummy," "Starship Troopers," "Willow" and "Highlander." He sadly passed away a few years after the film's release.
Trivia: The director, Tommy Wirkola, has an uncredited cameo of sorts (seen on screen longer than a usual cameo) as one of Sheriff Berringer's four deputies. Stuntman Wolfgang Lindner portrayed one of the deputies, and is uncredited as well.