Movies are often carefully scripted, with every bit of detail planned out well in advance. However, sometimes unplanned moments can make it into the final film. When an actor is given a script, they are not simply reading off a piece of paper. Instead, they are bringing the words to life and making them their own. Sometimes, actors improvise the onset to make a scene even better. These moments often result in some of the most memorable scenes.

Here are 13 examples of improvisation gone right in some of our favorite movies. Enjoy!

1. Fight Club, 1999

Image: Fight Club / Art Linson Productions

Edward Norton and director David Fincher improvised the first fight scene in which Brad Pitt's character Tyler explains the fight club. Norton's character was initially slated to hit Pitt on the shoulder, but the director requested him to do something unexpected moments before the shot. And Edward couldn't think of anything better than punching Brad in the ear. As a result, Pitt's yells and Norton's apologies appeared extremely serious. This improvisation made the scene more realistic.

2. Captain America: The First Avenger, 2011

Image: Captain America: The First Avenger / Marvel

The incredible moment in which Captain America gains his perfect body includes some improvisation. Hayley Atwell ignored the script and instinctively touched Chris Evans' body in this episode. This scene was kept to establish how attractive the new superhero was.

3. Saving Private Ryan, 1998

Image:  Saving Private Ryan / Amblin Entertainment

Captain Miller and Private Ryan discuss their recollections of home in a scene from "Saving Private Ryan." Matt Damon (Private Ryan) made up the story and improvised the scene. The story touched many people, and it's hard to believe it wasn't in the screenplay.

4. Star Wars: The Last Jedi, 2017

Image:  Star Wars: The Last Jedi / Lucasfilm

Although the majority of fans disliked Star Wars: The Last Jedi, there was one scene that impacted everyone. "No one's ever really gone," Luke Skywalker tells his sister Leia in the scene, kissing her on the forehead. Mark Hammil came up with the idea for this heartfelt kiss. The filmmaker was so taken with this concept that he decided to include it in the film. Also, this episode has considerably more depth because Carry Fisher, who played Leia, died a year before the film was released. So, in a sense, we saw an episode in which two characters said their goodbyes to one another.

5. American Hustle, 2013

Image: American Hustle / Atlas Entertainment

Jennifer Lawrence, who plays the main character's wife, has an emotional scene in American Hustle where she is arguing with his lover, played by Amy Adams. The dispute becomes so hot at one point that Lawrence kisses Adams aggressively and laughs. Actress Amy Adams later revealed that this moment was not originally on the screenplay. However, she made it up, and the director backed her up.

6. Iron Man, 2008

Image: Iron Man / Paramount Pictures

"I am Iron Man," one of the most famous lines, was improvised by Robert Downey Jr. This unintentional remark altered the trajectory of the Marvel universe and created a series of Iron Man blockbusters.

7. Spider-Man: Homecoming, 2017

Image: Spider-Man: Homecoming / Marvel Studios

A scene from "Spider-Man: Homecoming" where Robert Downey Jr. says, "That's not a hug, I'm just grabbing the door for you, is an improvisation of both actors Tom Holland and Robert Downey Jr. The director decided to keep the sequence since it looked beautiful.

8. 300, 2007

Image: 300 / Warner Bros. Pictures

The actor Gerard Butler improvised King Leonidas' iconic yell "This is Sparta!" which became one of the most popular internet memes. Director wanted the actor to whisper this dialogue in a low tone, but the actor yelled it loudly and then kicked the Persian messenger into the well.

Image: 300 / Warner Bros. Pictures

9. Titanic, 1997

Image: Titanic / Twentieth Century-Fox Film Corporation

"I am the king of the world!" screams Jack from the Titanic's nose, and it was Leonardo DiCaprio's idea that the director appreciated. Furthermore, Jack makes a mistake the moment when he paints Rose naked. According to the screenplay, DiCaprio had to say "Over on the bed," but he ended up saying "Over on the bed… ugh… the couch." As a result, the actor made a mistake and immediately remedied it, and director James Cameron chose not to reshoot the episode. Instead, he said the viewers could grasp what the young man was thinking this way.

Image: Titanic / Twentieth Century-Fox Film Corporation

10. Call Me By Your Name, 2017

Image: Call Me by Your Name / Frenesy Film Company

The most memorable sequence in the drama Call Me by Your Name is the final shot, in which Timothée Chalamet's character looks into the camera for two seconds as if he is looking right into your heart. The young actor made this decisive move on his own. As a result, Timothée was nominated for an Academy Award for Best Actor, making him the youngest candidate in this category since 1938.

11. Raiders of the Lost Ark, 1981

Image: Raiders of the Lost Ark / Paramount Pictures

Indiana Jones was going to battle the bad guy with a sword in the script, and the fight sequence was supposed to be extended. Everything was in place for the filming of this huge scene, but actor Harrison Ford had stomach poisoning the day before and wasn't in the mood for a long fight. So, rather than a sword fight, he took out his revolver and shot the guy. This scene became well-known.

12. The Godfather, 1972

Image:  Godfather / Paramount Pictures

"Leave the gun, take the cannoli" is a quote from the iconic film The Godfather, and it is one of the film's most famous lines. Actor Richard S. Castellano improvised the second portion of this statement entirely. He only intended to say, "Leave the gun," but Castellano added the cannoli section since he remembered a situation where his wife asked him to bring this Italian treat home.

13. Harry Potter and the Deathly Hallows: Part 2, 2011

Image:  Harry Potter and the Deathly Hallows: Part 2 / Warner Bros. Pictures

Ralph Fiennes came up with the idea for the scene in Harry Potter and the Deathly Hallows where Voldemort hugs Draco as if to say, "Welcome home." The character was supposed to walk past in the script, but Fiennes decided it was too dull. In the end, the scene was awkward and unsettling, highlighting the Dark Lord's complete inability to experience positive emotions.

Some scenes seem too good to be true. In the movies, they always have a script, and actors know how things will go down before it happens. But sometimes, filmmakers capture something unexpected on camera. This unscripted moment didn't make it into the film's final cut but was still worth including in one way or another.

We rounded up 13 such moments from popular films for your viewing pleasure! Which one do you find most interesting? Let us know in the comments. Share this article with your friends if you think future generations should never forget these movie bloopers.

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