Trivia: Disabled U.S. veterans would tell Gary Sinise that they were inspired by his portrayal of Lt. Dan in this film. Feeling humbled because he himself was neither a veteran or disabled, he established the Gary Sinise Foundation in order to help disabled veterans adjust to their new lives. https://www.garysinisefoundation.org.
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 movie, when the candy store owner is singing the candy man song, there's a spot towards the end of the song where he lifts up his counter to let all the kids in. Watch the little blonde girl as she gets walloped in the chin by the counter. (00:04:30)
Trivia: Clark Griswold in the attic watching old movies dressed in a woman's turban and gloves to keep warm is not only funny but a reference to the Norma Desmond character from "Sunset Boulevard", who watches her old films to remember her Hollywood glory days.
Trivia: Brodie says "Would you like a chocolate covered pretzel?" He said the same thing in Mallrats.
Trivia: In an interview, the director stated that hoverboards were real, but they weren't on the market because parents didn't like the idea of floating children. He said this as a joke, but this didn't stop mass hysteria as thousands of kids went from store to store looking for hoverboards.
Trivia: When Chandler cracks a joke and upsets the dragon lady, she throws a fit. Doctor Hong calms her down in Chinese. He is saying, 'I am sorry, I am sorry, he has no manners.' (00:19:55)
Trivia: Mayday uses Rust-eeze, Lightning McQueen's sponsor from Cars.
Trivia: John Cusack's real-life sister, Joan Cusack, is wearing a neck brace on the bus at the beginning of the film.
Trivia: John Travolta made up the "cool dude walk" that Danny uses in the first scenes, when trying to create a bad boy image.
Trivia: When Deadpool autographs the cereal box he signs it Ryan Reynolds.
Trivia: Nan Martin (the unattractive Tanya/Nurse "sourpuss") was the real-life mother of Zen Gesner (who played Ralph).
Trivia: Not really a mistake, given the need for drama in a war film, but the mission takes place the evening before D-Day, meaning the Allies had complete air supremacy, and knew the exact time, date and place of the meeting of the German officers, this mission would never have taken place. The brightly lit chateau would have been flattened by a squadron of heavy bombers. Lee Marvin, an experienced combat veteran, pointed this out to the producers and was told to keep his opinions to himself.
Trivia: When the movie was first shown in theaters, the marquee read, "From the director of Animal House...A Different Kind of Animal." This lead many movie patrons to believe that it was another comedy film. People ran out of theaters in terror when they realised it was a horror movie.
Trivia: The film is a remake of Shakespeare's comedy play "The Taming of the Shrew".
Trivia: When the Grinch takes the table cloth from the table, everything on the table was supposed to fall off. When Jim Carrey yanked out the cloth however, everything stayed in place. Jim immediately walked back to the table and improvised knocking everything off and then knocking the table over.
Trivia: In the last scene when the everyone meets to play poker Catherine Zeta Jones throws her hands up to celebrate a win and falls out of her chair for real.
Trivia: All of the entire cast performed their own singing.