Trivia: Director Taika Waititi has a cameo as the local church minister who delivers the sermon at the funeral.
Trivia: Early in the movie, when George is speaking to John, he says, "Me Tarzan, you Jane." Even though this line has been synonymous with the character Tarzan, it has actually never been said by Tarzan at all in any movie or any stories written about Tarzan's adventures. This is officially the first time the line is used.
Trivia: In the 'happy Lent' scene, Wade is reading the Mario Lopez autobiography. Mario Lopez filmed a promotion with Ryan Reynolds where they pretended the movie was going to be toned down to a PG-13, which would have infuriated fans, before revealing the true R rating.
Trivia: Despite receiving fifth billing, Andy Garcia is only on screen for 10 seconds and has no lines at all.
Trivia: The Zootopia taxicab service is called Thigmo Taxis, which is a pun adapted from the biological term "thigmotaxis," meaning "Movement of an organism toward or away from any object that provides a mechanical stimulus."
Trivia: During the several scenes where the pilots are communicating with Air Traffic Control, they are always addressed as flight 1549. During the real incident, however, both the pilots and controllers misspoke, labeling the flight number as both 1529 and 1539. This was likely due to the intensely stressful situation.
Trivia: The sorcerors' WiFi password, Shamballa, is a reference to the 1986 Doctor Strange graphic novel "Into Shamballa."
Trivia: When Moon is riding his bike in the beginning of the film, he crosses a bridge, and we can see a whale wearing the bowler hat from "Meet the Robinsons."
Suggested correction: The hat that the whale wears is red but Doris' (Mike Yagoobian A.K.A Bowler Hat Guy's hat) is black. Besides, Sing is a Universal/Illumination Entertainment production while Meet The Robinsons is a Disney production.
Trivia: During the big fight between Batman and Superman, a broken window has the same shape as Ontario, in Canada. Superman creator Joel Shuster was born in Toronto. The broken window is only ever shown from Superman's angle, not Batman's. This was confirmed by Zack Snyder as being a deliberate, if obscure, easter egg.
Trivia: When Lorraine Warren is dreaming about the demonic nun in her house, the demon actually reveals its name in 2 ways. The first is the way Lorraine realises at the end of the movie (written in the Bible). However, the audience is another way-the gold letters on the bookshelf behind her also spell out the name "Valak."
Trivia: The "Demonic Balloons" that attack the Ghostbusters are almost direct re-creations of real Macy's Thanksgiving Day Parade balloons from the 1930's. The filmmakers decided to use the real designs in order to represent the "spirits" of New York's history... and also because they were quite eerie and unsettling.
Trivia: The banker who turns down Jacob's first request for a loan is named Mr. Bingley, an obvious homage to one of the main characters in Jane Austen's Pride and Prejudice. J. K. Rowling has stated numerous times in interviews that Austen is her favorite author, and this is not the first time she has alluded to her works with a character name; Argus Filch's cat, Mrs. Norris, from the Harry Potter books and movies shares her name with the busybody character from Mansfield Park.