Trivia: During the real Deepwater Horizon oil spill, actor Kevin Costner offered his services, claiming that a small company he bought from the U.S. Department of Energy could clean up 90% of the oil in a week, using poorly-tested technology. His offer was accepted, despite zero evidence that the technology ever worked; and it failed miserably, of course.
Trivia: Despite receiving prominent billing, Jonah Hill is only in the film for three minutes.
Trivia: Spoilers: At one point during the climax, you can briefly see a creature with long arms and legs barging through a doorway for a split-second. Many viewers assumed that this was the titular "Blair Witch." However, the screenwriter has stated that any creatures/specters visible in the film are meant to be grotesque manifestations of the witch's past victims (with the long-limbed creature presumably being Heather given she's in the place where Heather died), and that as stated earlier in the film by one of the characters, nobody can actually "see" the witch herself.
Trivia: When one of the Galactic Rangers' robots falls off a platform, he yells a Wilhelm scream.
Trivia: In his address to his crew, Nicholas Cage says "Without me, you are worthless. You are my crew. And without you, I am worthless." This line is borrowed from Full Metal Jacket (1987): "Without me, my rifle is useless. Without my rifle, I am useless."
Trivia: The film was originally written to be an introspective, existential dramedy geared towards adults about a troubled man who is turned into a cat. As originally planned, the cat also wouldn't speak/the audience wouldn't hear his thoughts. However, after a change in leadership at the studio, the film was rewritten into a more generic family movie.
Trivia: The line "he'll stop doing it" "stop doing what?" followed by violence was used almost identically in Iron Man 3, also written and directed by Shane Black.
Trivia: When Tripp is talking to his truck and he says "you'll have the heart of an elephant", it refers to the nickname hot rodders called the 426 Hemi V8 from 1966-1971, called the "Elephant Motor" for its massive size and weight. It also made 425 horsepower, which Tripp incorrectly states that the engine he pulled out of the truck made.
Trivia: Although Jennifer Saunders and Julia Sawalha play mother and daughter, Saunders is only ten years older than Sawalha.
Trivia: The first leading lady role for Michelle Rodriguez since 2000's Girlfight.
Trivia: "Keeping Up with the Joneses" was originally meant to be a sequel to the film "Mr. And Mrs. Smith," with Brad Pitt and Angelina Jolie both intended to return. However, Pitt and Jolie were dissatisfied with the screenplay and dropped out. Eventually, all connections to that film were dropped and the movie was retooled to be a stand-alone film.
Trivia: While no official explanation was given as to why the planned theatrical release was canceled, it has been speculated by insiders that Universal bailed on the release due to the large number of franchise-based Sci-Fi and action films being released in 2016 providing too much competition for an original property such as "Spectral", as well as Universal being leery over the project after the disappointing domestic box office of one of their other major 2016 releases, "Warcraft."
Trivia: Steven Seagal does not say his first line of dialogue until 48 minutes into the movie.
Trivia: Brent Spiner performed the majority of his scenes alone, with no other principal actors on the set. In fact, Spiner is digitally inserted into some scenes where he appears with other principal actors.
Trivia: Eddie is given a heartfelt pep talk by his idol Matti Nykänen, the Finnish ski jumper. Nykänen actually spoke no English at all.
Trivia: At the very beginning of the movie, as the car drives along towards the town, the music to Stephen Kings' The Shining plays.
Trivia: The president of Venezuela says, "Have you seen the autotune on YouTube?" The video is never shown, however if you wait until the end credits the autotune plays as a credits song.
Trivia: This is the only movie of the series where Scrat never interacts with the main heroes.
Trivia: Paul Reubens revealed that, in addition to old makeup tricks, digital effects were used to de-age him for the film, to make him look more like he did in the previous films. Reubens remarked that when he was told how expensive the de-aging effects were during post-production, he realised it would have actually been significantly cheaper for him to have just gotten extensive plastic surgery to make himself look younger before filming.