Shrek was originally given a thick Canadian accent by actor Mike Meyers. However, after the animation had begun and the dialogue almost finished, Meyers decided the character would be better portrayed with a Scottish accent. The film had to be re-animated and this little change cost over $4 million.
2. The R-rated film Planes, Trains and Automobiles would have been rated PG if not for the scene where Steve Martin says "fu*king" 18 times in one minute. Despite the rating, it is the only time in the movie where the word is used.
3. The Big Lebowski secured rights for the song Dead Flowers (closing credits) when rights owner and Rolling Stones manager Allen Klein, who was asking $150,000 heard the line "I hate the fuckin’ Eagles, man!'' Klein stood up and said, ‘That’s it, you can have the song!'
4. In Jurassic Park (1993), the insect trapped in amber and which made the cloning of dinosaur possible was actually an elephant mosquito. Technically, it's the only mosquito that doesn't suck blood, so in theory, cloning dinosaurs with its help shouldn't have been possible.
5. Mad Max: Fury Road had filming moved from the Broken Hill region of NSW to Namibia after unusual rainfall caused the desert landscape to bloom with wildflowers.
The head-in-the-box ending of "Se7en" was originally rejected by the studio, but David Fincher was accidentally sent the original screenplay with that ending, convincing him to make the movie. The producer still objected to it, but Brad Pitt refused to act in the film unless the scene was kept.
7. During the filming of The Wolf of Wall Street, Jonah Hill took revenge on Leonardo DiCaprio by giving him food poisoning. By improvising a line, Hill made DiCaprio eat the last piece of raw yellowtail sushi. DiCaprio had to repeat this 70 times. Only Hill and Martin Scorsese found it funny.
8. The infamous scene, in Mel Gibson's film "The Patriot" depicting the herding noncombatant men, women and children into a church, and setting it on fire is based on the SS massacre of French villagers in Oradour-Sur-Glane in 1944. Nothing like this ever happened in the American Revolution.
9. The dust storm that sets off the events in the film "The Martian" isn't plausible because the atmosphere on Mars is about 1% as dense as Earth's and the winds in the strongest Martian storms top out at about 60 miles per hour, unlikely to tip or rip apart major mechanical equipment.
10. "Airplane" was judged "culturally, historically, or aesthetically" significant and added to the National Film Registry in 2010
The Prawns in the movie District 9 are not called that because they looked like shrimps, but the name is in reference to the Parktown prawn which is a cricket native to South Africa.
12. The boots worn by the actors portraying American soldiers in Saving Private Ryan were made by the same company that supplied boots for American soldiers during the Second World War.
13. "Finding Nemo" is the second film to be dubbed in Navajo, following the success of Navajo "Star Wars Episode IV: A New Hope". It was a joint effort between the Navajo Nation Museum and The Walt Disney Studios for more than a year
14. The "Funny how? Like a clown?" scene in Goodfellas is based on an actual encounter Joe Pesci had with a mobster while working in a restaurant as a young man.
15. The 1959 film "The Tingler" was about a parasite that causes tingling sensations in victims. The film's producers rigged surplus WWII aircraft motors to random theater seats, so viewers would "feel the tingler" when it attacked. Some viewers were also paid to pretend to scream and faint.
The entire movie of "Chinatown" is portrayed subjectively through the eyes of the main character, Jake Gittes (Jack Nicholson), who appears in every scene. In fact, in the one scene when Gittes is knocked unconscious, the film fades to black and fades back in only when he awakens.
17. Mouse's shotguns in The Matrix were working models that fired 900 rounds per minute. It used a unique cam-driven design invented by movies armorer, John Bowring.
18. In Top Gun, Maverick goes into a flat spin which he cannot recover and crashes into the ocean, killing Goose. During production, the stunt pilot hired to perform and film the scene went into the flat spin but couldn't recover, crashed into the ocean, and died.
19. In Spirited Away, Miyazaki based the river spirit on his own experience of cleaning a polluted river.
20. While filming the 1925 movie 'Ben-Hur', the director split Italian extras based on fascist or antifascist factions to make the fighting more realistic. Real swords were removed from the scene to prevent things from getting too out of hand.
21The Italian Job
In The Italian Job (2003) the studio had to build custom electric Mini Coopers for the scenes in the LA subway because combustion engines would have been too dangerous in the enclosed spaces.
22. The original script of Braveheart had the Irish fighting the Scottish, which was historically accurate. The script had to be changed because the Irish and Scottish extras refused to fight each other.
23. The famous horror film "A Nightmare on Elm Street" is actually based on a true story. The director claimed of a young boy who saw a mysterious creature trying to kill him in his dreams. Days after trying to stay awake, the boy screamed, then died in his sleep.
24. In Reservoir Dogs, the person Mr. Pink pulls out of her car is the same person that gets shot by Marcellus Wallace after the car wreck in Pulp Fiction.
25. When Mrs. Doubtfire was serving tea, the icing on his/her face is melting off. This was not intentional. The heat from the set lights melted the icing on his face and Robin Williams improvised the bulk of that scene.