Trivia: The company that offers work to Lightning McQueen is called Dinoco. Dinoco is the name of the gas station that Andy stops at on his way to Pizza Planet in Toy Story.
Trivia: As Hal meets Meredith coming out of an elevator in the hotel, she is mumbling "Let's Get Together", which was a song from the original movie.
Trivia: Both Ben Stiller's parents are in this movie. They are the former owners of the fat camp.
Trivia: During a speech in Toronto, Bradley Cooper told audiences that people in Las Vegas didn't even notice they were filming a movie, even though he had bloody tiger scratches on his neck, and Justin Bartha was beet red, nobody stopped to look.
Trivia: Miranda Cosgrove, who plays Summer Hathaway, actually has a good voice and plays guitar. She had to take a 45-minute class to learn how to sing badly for the scene where she sang "Memories."
Trivia: The boardwalk scenes were filmed on location at the Santa Cruz Beach Boardwalk in Santa Cruz, California.
Trivia: George Clooney (Everett) was going to sing "Man of Constant Sorrow" for the film but his singing voice was very poor so he ended up lip-synching the songs instead. He said "I'm not my aunt [referring to the late singer/actress Rosemary Clooney, best known for her role in "A White Christmas" (1954)]. I decided it would be easier to just do a passionate lip-sync." He was so nervous that the tapes of his singing would get out that he returned to the studio to ensure all the evidence had been erased. The musical director of the film confirmed this but said "George is a very good singer but that style of music is very difficult and one almost has to grow up singing it in order to sing it convincingly. George did a really good version of the tune but it wasn't as good as he wanted."
Trivia: Kevin Smith once happened upon a demonstration against this movie by a group of Catholics. Since nobody recognized him, he simply joined in.
Trivia: The voice behind Roz, the number 1 of the Child Detection Agency and the undercover secretary, is actually a man.
Trivia: In the scene after Hiccup finally gets Toothless' new tail fin to work, and the two are relaxing after they fly through the fire ball, the two are greeted by a group of tiny dragons. This little dragon was actually what Toothless was originally going to be, as he was in the book, until they changed him to a dragon big enough for Hiccup to ride to suit the movie. (00:46:15)
Trivia: During the opening musical number, Tracy passes a man on the sidewalk wearing a trench coat who then flashes the crowd; this is John Waters, the writer and director of the original 1988 version.
Trivia: In the scene where Nicky goes to heaven and meets his mother, a man walks in and she introduces the man as Chubbs. Chubbs was Adam Sandler's golf instructor in Happy Gilmore.
Trivia: Dropping Ted while he was on the stretcher was not intended, it accidentally collapsed. When it did, the Farrelly brothers called cut to make sure Ben Stiller was alright, and then just left it in.
Trivia: The prom night band is punk-rock group Good Charlotte.
Trivia: The knife that is given to Louis by the pirates is the exact same knife that Buck had in the previous film.
Trivia: Fun to spot - In the scene where Eddie Murphy is fighting the big guy, after a while he says, "I know a bitch named Della who hit harder than you." Here, he is referring to Della Reese, whom he fought with in Harlem Nights.
Trivia: Nicolas Cage actually owned the Ferrari 550 Maranello that he drives in this movie.
Trivia: Melinda Dillon was given the wrong script on purpose when they filmed the Chinese restaurant scene. She had no idea that when they brought the duck out it would have its head still attached. All of her reactions, including when she first sees the duck and when the server cuts the head off, were completely genuine.
Trivia: HIDDEN MICKEY: At the end, fireworks go and 3 go into the shape of Micky Mouse.