Trivia: The Captain of the Iwo-Jima who Tom Hanks talks to at the end of the movie is the real Apollo 13 astronaut Jim Lovell.
Trivia: When Harry is being run all over town by Scorpio, he passes a wall which bears the graffiti "Kyle", the name of Clint Eastwood's son.
Trivia: When Joe Dirt finds out where he lives in Louisiana, there is a guy (Framer Fran) that speaks very strangely. He is played by Blake Clarke who played the same farmer character in The Waterboy.
Trivia: Before the witch trial, you can see Sir Bedevere tying coconuts to a swallow, no doubt to test the theory people argue about elsewhere in the film.
Trivia: Director Taika Waititi has a cameo as the local church minister who delivers the sermon at the funeral.
Trivia: To make the water in the glass on the dashboard 'jump', they strung a guitar string from the underside of the dashboard to a bolt on the floor and then plucked the string.
Trivia: According to the Director's commentary, Twentieth Century Fox Film Corporation did not want the film to be released under the title "Independence Day" to avoid legal complications (specifics weren't disclosed as to what the problems might be, but it's also why the abbreviation "ID4" was used). Roland Emmerich (director/writer) and Dean Devlin (writer) needed to justify the title, so they added the rousing bit right at the end of President Whitmore's speech at the hangar when he ends with, "The 4th of July will no longer be known as an American holiday...today we celebrate our Independence Day!"
Trivia: In an interview, Jim Carrey admitted to being obsessed with the number twenty-three.
Trivia: Spike Jonze is uncredited in the movie for his role as Jerry.
Trivia: SPOILER: Although it was the film's worst kept secret, whenever asked, Andrew Garfield would deny, sometimes vehemently, that he would be appearing in it.
Trivia: While Guy fights with Dude, there is kid with a red shirt watching the game. Behind his back there is a Deadpool poster, another Ryan Reynolds movie.
Trivia: Although they play mother and son in this film, Bryce Dallas Howard is only eight years older than Taron Egerton.
Trivia: Samuel Jackson spotted that the eye patch his character wears in the movie switched eyes in the promotional posters announcing the movie in Los Angeles.
Trivia: When Eddie walks into Mrs. Chen's store, Eddie asks Venom what he would like to eat. Venom responds that he wants tater tots and chocolate. In Venom: The Hunger, it's discovered that the symbiotes need a chemical called phenethylamine to survive. This chemical can be found in both brains and in chocolate.