Hollywood screenwriters toil over what each character in the story will say no matter if they're working on romantic comedies, dramas, and even kids' movies. The lines are then often debated and rewritten many times before, during, and after a movie is shot. But they are not the ones who decide what ends up in the final cut. Directors do. And if they like an improvised scene better than the scripted one, the writers just have to deal with it. It's part of the process. In fact, you'd probably be surprised to know that some really iconic moments in movie history have been authentic. Here are some of them.
#21 In The Princess Diaries (2001), The Scene Where Mia Trips And Falls In The Bleachers Wasn’t A Part Of The Script. Anne Hathaway Had Accidentally Slipped In A Puddle. Director Garry Marshall Liked It So Much That He Decided To Keep It In The Movie

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#22 To Recreate The Revolutionary Spirit, The Cast Of Les Miserables Were Told To Build A Barricade In 10 Minutes. The Cameras Were Rolling And What They Made Ended Up Being Used In The Final Film

The actors didn’t know where the cameras were placed and it looked like complete chaos, but the structure turned out to be quite realistic and just needed a bit of drilling to remain held together
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#23 In Willy Wonka & The Chocolate Factory (1971), When The Kids First See The Chocolate Room, Their Reactions Are Genuine. Director Mel Stuart Took Great Care To Ensure That None Of The Child Actors Saw The Gigantic Set As It Was Being Built

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#24 In Se7en [1996], Fincher Never Told John C. Mcginley That The Corpse Used For 'Sloth' Was Actually A Living Actor In Heavy Makeup. Mcginley's Character's Initial Shock When 'Sloth' Wakes In The Movie Was In Fact Mcginley's Genuine Surprise From The First Take
![In Se7en [1996], Fincher Never Told John C. Mcginley That The Corpse Used For 'Sloth' Was Actually A Living Actor In Heavy Makeup. Mcginley's Character's Initial Shock When 'Sloth' Wakes In The Movie Was In Fact Mcginley's Genuine Surprise From The First Take](https://img.boredpanda.com/unsafe/rs:fit:3840:0/q:80/aHR0cHM6Ly9zdGF0aWMuYm9yZWRwYW5kYS5jb20vYmxvZy93cC1jb250ZW50L3VwbG9hZHMvMjAyMS8wNi9hdXRoZW50aWMtYWN0b3JzLXdlcmVudC1hY3RpbmctcmVhY3Rpb25zLTYyLTYwY2NhZjQzM2EwNTlfXzcwMC5qcGc.webp)
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#25 Everyone On Titanic Knew That The Water Was Gonna Be Cold, But They Weren't Prepared For Just How Freezing It Was. The Water Was So Icy That Kate Winslet Couldn't Stop Shaking During The Axe Scene

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#26 Due To A Miscommunication On The Set Of The Hateful Eight, Kurt Russell Accidentally Smashed A 140-Year-Old Antique Guitar Instead Of The Prop

In the scene, you can see Jennifer Jason Leigh break character and scream and look at the crew because she was in disbelief when the antique guitar – which was supposed to be swapped out with a prop in between takes – got smashed.
The old guitar, which was made in 1870, was actually on loan from a museum. Dick Boak, the museum's director, changed their policy because of this mishap and said, "As a result of the incident, the company will no longer loan guitars to movies under any circumstances."
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#27 Michael J. Fox In ‘Back To The Future Part III’

In one scene, Marty gets strung up on the famous Hill Valley clock tower. In what was without a doubt something he later regretted, Fox said “Sure” to performing the stunt himself.
The plan was for him to use his hand to keep the noose from tightening around his neck and actually strangling him. In practice, he couldn’t get his hand into position and actually blacked out for a minute, until the crew realized what was happening and saved his life.
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123points
#28 The Office

It was hard for the actors to say goodbye to Steve Carell. That's why in the scene Pam rushes in the airport to say goodbye to Michael the emotional performance by Jenna Fisher was not a performance at all
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119points
#29 Matt Damon, 'Good Will Hunting' - The Fart Story Was Improvised, And Damon's Laughter Was A Real Reaction

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#30 In The Graduate (1967) Final Scene, The Director Got The Actors Expression For The Scene By Just Not Telling Them When He Was Going To Cut. There Was Nothing In The Script That Would Imply Their Facial Expressions Changing, He Just Had The Camera Running To Feel Their Energy Naturally Dissipate

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#31 In The Rocky Horror Picture Show (1975), When A Corpse Is Revealed Under The Dining Table, The Actors Were Genuinely Shocked. None Of Them Knew That The Body Was There – With One Exception, Tim Curry, Because He Was The One Who Had To Whip The Tablecloth Off

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#32 At The End Of Pirates Of The Caribbean: Dead Man's Chest (2006), When A Certain Character Returns From The Dead, The Cast Shows Genuine Surprise. The Character's Return Had Been Kept A Secret By The Writers- They Even Went Uncredited

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#33 The Moment Katniss Sees Peeta's Sunken Face On TV After He's Abducted By The Capital Is Dark What's Even More Heartbreaking Is That Katniss's Reaction Is Actually How Jennifer Lawrence Responded To Seeing The Video For The First Time. The Director Knew J Law Hadn't Seen Josh Hutcherson In A While And If She Was Shocked With The Video They'd Be Able To Capture Her Genuine Fear On Camera Talk About Intense Method Acting

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102points
#34 Jason Segel Didn’t Know His Character’s Father Was Going To Die On “How I Met Your Mother”

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100points
#35 The Shining

The meticulousness with which the film was created had a cost: Shelley Duvall’s wellbeing. Kubrick tormented the actress, making her do relentless takes, while verbally abusing her and dismissing her acting talent. This was intentional, as revealed in The Making of The Shining. Stanley Kubrick’s daughter, Vivian Kubrick, described how her father terrorized Duvall in order to make the insecurity of her character viscerally apparent.
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