I love soaking up movie trivia, some days I can spend a couple hours at a time just reading about one or multiple movies. Some movies of course have more interesting trivia facts than others, some big budget as well as low budget. These are just a few favorite movies of mine over several decades, a fun trivia fact from each movie which I think are loaded with movie trivia individually. 
In order by release date:
1960 Psycho - Although actress Janet Leigh was not bothered by the filming of the famous shower scene, seeing it on film profoundly moved her. She later remarked that it made her realize how vulnerable a woman was in a shower. To the end of her life, she always took baths, only.
1961 Breakfast at Tiffany's - Holly Golightly is supposed to be just nineteen years old when she meets with Paul. Actress Audrey Hepburn was thirty-one years old when playing Holly.
1962 The Miracle Worker - Although actress Patty Duke had been playing Helen Keller in the play for more than a year, she almost didn't get the part in the film adaptation. The studio felt that being a teenager, she looked too old to play a seven-year-old. However, they decided to use Duke after deciding to use actress Anne Bancroft, who played Duke's original Annie Sullivan in the play.
1965 The Sound of Music - Actor Christopher Plummer intensely disliked working on the film. He's been known to refer to it as "The Sound of Mucus" or "S&M" and commented on working with actress Julie Andrews to "being hit over the head with a big Valentine's Day card, every day." Nontheless, he and Andrews have remained close friends ever since. Andrews herself claimed that Plummer's cynicism probably helped his performance and the film, keeping it from being too sentimental.
1967 The Graduate - None of the older characters are called by a first name in the film; only the younger characters of Benjamin, Elaine and Carl are called by their first names, increasing the sense of a generation gap.
1968 Night of the Living Dead - The word "zombie" is never used in this film. The most common euphemism used to describe the living dead is "those things," mostly by Cooper. Other characters refer to the creatures as "ghouls" and "flesh eaters". However, the film codified many tropes about zombies that have been used in many movies since, including zombies eating human flesh and that zombies can only be killed by shooting them in the head.
1968 Rosemary's Baby - Mia Farrow said in a recent interview that the actor playing the Devil, Clay Tanner, was completely naked during the rape scene on top of her, dressed up in demonic makeup with vertical contact lenses. She said Tanner spent hours grinding on top of her as they were shooting the rape scene. After they were done he got up, shook Mia's hand in a very cordial and businessman type way and said "Miss Farrow, it was a pleasure working with you". Mia shook his hand back and said "thank you. He was a very lovely man", she said.
1973 The Exorcist - Due to death threats against actress Linda Blair from religious zealots who believed the film "glorified Satan", Warner Bros. had bodyguards protecting her for six months after the film's release. "The Exorcist" went on to become the first horror film to be nominated for the Academy Award for Best Picture.
1975 Jaws - Several decades after the release of "Jaws", actress Lee Fierro (who played Mrs. Kintner, the mother who lost her son to the shark), walked into a seafood restaurant and noticed that the menu had an "Alex Kintner Sandwich." She commented to the waitress that she had played his mother so many years ago in the movie; when the owner of the restaurant ran out to meet her, and he was none other than Jeffrey Voorhees (who had played her son in the film). They had not seen each other since the original movie shoot.
1976 Taxi Driver - The scene where Travis Bickle is talking to himself in the mirror was completely ad-libbed by actor Robert De Niro. The screenplay details just said, "Travis looks in the mirror." Director Martin Scorsese claims that he got the inspiration for the scene from Marlon Brando mouthing words in front of a mirror in "Reflections in a Golden Eye".
1977 Star Wars: Episode IV - A New Hope - George Lucas' decision to accept a lower salary on the movie in exchange for full merchandising rights was considered a fool's gamble on his part. Toys based on movies had never been major money-earners (though some movie-toy combinations had done moderate retail returns) because of the long gap between when a movie would go through its theatrical run and when any products based on it would be available. This movie, however, was such a phenomenon that it reached the holiday 1977 sales period in full swing, and changed the way movies were merchandised forever.
1978 Halloween - The original script, titled "The Babysitter Murders", had the events take place over the space of several days. It was a budgetary decision to change the script to have everything happen on the same day (doing this reduced the number of costume changes and locations required) and it was decided that Halloween, the scariest night of the year, was the perfect night for this to happen. To their shock, no movie had ever been done prior with the word Halloween in the movie title.
1978 Superman - This film's credits sequence cost more than most movies made back in profits, up to that point. The credits even cost more than some movie budgets during the time, such as the movie "Airplane!", which had an estimated $3,500,000 budget.
1979 Alien - For the chestburster sequence, actor Sir John Hurt stuck his head, shoulders and arms through a hole in the mess table, linking up with a mechanical torso that was packed with compressed air (to create the forceful exit of the alien) and lots of animal guts. The rest of the cast were not told that real blood and guts were being used, so as to provoke genuine reactions of shock and disgust. Apparently, this worked so well that actor Yaphet Kotto (Parker) went home in complete shock afterwards, locking himself in a room and refusing to talk to his wife for several hours.
1980 The Shining - Because actor Danny Lloyd (Danny) was so young, and since it was his first acting job, director Stanley Kubrick was highly protective of the child. During the shooting of the movie, Lloyd was under the impression that the film he was making was a drama, not a horror movie. In fact, when the character Wendy carries Danny away while shouting at Jack in the Colorado Lounge, she is actually carrying a life-size dummy, so Lloyd would not have to be in the scene. He only realized the truth several years later, when he was shown a heavily edited version of the film. He did not see the uncut version of the film until he was seventeen, eleven years after he had made it.
1983 A Christmas Story - When they filmed the scene in the Chinese restaurant, Melinda Dillon was purposely given the wrong script, and everyone was in on it. She had no idea that the duck would still have its head and the first time she saw it was when they were filming. Her reactions during the entire sequence were not scripted, which is what director Bob Clark was going for.
1983 National Lampoon's Vacation - All the cast members had terrible experiences when it came to filming the scenes inside Walley World, where they rode all of the roller coasters and other rides. Actor Chevy Chase said the rides made him vomit, especially since he had to ride them several times for each take. Actress Dana Barron mentioned says that the coasters made her so sick, she had to take motion sickness pills, and would pass out on nearby benches between takes. Actor Anthony Michael Hall and actress Beverly D'Angelo suffered from having a fear of roller coasters, having their doubles sit in during any take they could. And finally, actor Eddie Bracken (Roy Walley), had never been on a roller coaster before. In the final scene in the film you can hear his genuine scream come down the roller coaster drop.
1985 The Breakfast Club - The scene in which all characters sit in a circle on the floor in the library and tell stories about why they were in detention was not scripted. Writer and Director John Hughes told each actor to ad-lib their stories as emotional as they felt it should be. Actress Ally Sheedy, got the last genuine laugh of all of the actors when she said she simply had nothing better to do.
1988 Big - The 'Walking Piano', first spotted by the filmmakers at F.A.O. Schwarz toy store, was 6.5 feet long and played only one octave. So the piano was too small to play the notes director Penny Marshall needed (the script was written that Tom Hanks and Robert Loggia would play 'Heart and Soul' on the piano). So she contacted Remo Saraceni, the creator of the 'Walking Piano', and said she needed one built large enough to accommodate the dancing feet of two grown men. So the obliging Saraceni made a sixteen-foot long, full three-octave piano wide enough for the scene. According to actor Robert Loggia, on the day they filmed the famous keyboard scene, he and Tom Hanks noticed that doubles dressed like them were on hand just in case the two could not do the dance moves correctly. It became their goal to do the entire keyboard number without the aid of the doubles. They succeeded.
1988 Die Hard - Ironically, actor Bruce Willis, sneered at for being an all-American hero by the head German terrorist in the role of John McClane, in real-life, is actually more German than most of the villains in the film; Alan Rickman (Hans) was English and Alexander Godunov (Karl) was Russian. Bruce Willis was born on March 19th 1955 in West Germany to an American father and a German mother. Only a couple of the actors who played the German terrorists were actually German and only a couple more could speak broken German. The actors were cast for their menacing appearances rather than their nationality. 9 of the 12 were over 6 feet tall.
1989 Batman - Actor Robin Williams was offered the role of The Joker when actor Jack Nicholson hesitated. He had even accepted the role, when producers approached Nicholson again and told him Williams would take the part if he didn't. Nicholson took the role, and Williams was released. Williams resented being used as bait, and not only refused to play The Riddler in "Batman Forever" but also refused to be involved in any Warner Brothers productions until the studio apologized.
1990 Goodfellas - The "f" word and its derivatives are used 321 times, for an average of 2.04 per minute. About half of them are said by Joe Pesci. At the time of the films' release, this was the most profanity of any movie in history. It is currently the fifteenth most f-bomb laden film ever released. The Wolf of Wall Street (2013) is third on the list, also directed by Martin Scorsese. The script only called for the word to be used seventy times, but much of the dialogue was improvised during shooting, where the expletives piled up.
1993 Jurassic Park - Director Steven Spielberg wanted the velociraptors to be about ten feet tall, which was taller than they were known to be. During filming, paleontologists uncovered ten-foot-tall specimens of raptors called Utahraptors. Which were a closer representation of the raptors in the film.
1993 The Nightmare Before Christmas - It took a group of around 100 people three years to complete this movie. For one second of film, up to 12 stop-motion moves had to be made.
1994 Pulp Fiction - In real life, Vincent Vega's (John Travolta's) 1964 Chevelle Malibu convertible belonged to writer and director Quentin Tarantino, and was stolen during the production of the film. In 2013, a police officer saw two kids stripping an older car. He arrested them, and when researching the vehicle, found the VIN had been altered. It turned out that it was the car stolen off Quentin Tarantino. The owner had recently purchased it, and had no idea it was stolen.
1994 The Shawshank Redemption - Andy and Red's opening chat in the prison yard, in which Red is throwing a baseball, took nine hours to shoot. Actor Morgan Freeman threw the baseball for the entire nine hours without a word of complaint. He showed up for work the next day with his left arm in a sling.
1997 Titanic - The whole movie except the present-day scenes and the opening and ending credits, have a total length of two hours and forty minutes, the exact time it took for Titanic to sink. Also, the collision with the iceberg reportedly lasted 37 seconds, which is how long the collision scene is in the movie.
1998 Saving Private Ryan - The Omaha Beach scene cost $11 million to shoot, and involved up to 1,000 extras, some of whom were members of the Irish Army Reserve. Of those extras, twenty to thirty of them were amputees, issued with prosthetic limbs, to simulate soldiers having their limbs blown off.
