1. Guardians Of The Galaxy

Chris Pratt apparently stole his Star-Lord costume from the set, for the sole purpose of having it available so he could show up in costume to visit sick children in the hospital, who might want to meet Star-Lord.

2. The Theory Of Everything

In an e-mail to director James Marsh about the portrayal by Eddie Redmayne, Stephen Hawking said there were certain points when he thought he was watching himself. In addition to his copyrighted voice, Stephen Hawking also lent the filmmakers his Companion of Honour medal and his signed thesis to use as genuine props in the film.

3. Dallas Buyers Club

The film's budget was so low that the makeup budget was $250. The film's artists were able to work with that, and the film's Makeup and Hairstyling won an Oscar.

4. Armageddon

NASA shows this film during their management training program. New managers are given the task of trying to spot as many errors as possible. At least one hundred sixty-eight have been found.

5. The Godfather

The cat held by Marlon Brando in the opening scene was a stray that Coppola found while on the lot at Paramount, and was not originally called for in the script. So content was the cat that its purring muffled some of Brando's dialogue, and, as a result, most of his lines had to be looped.

6. The Matrix

Kung Fu choreographer Woo-Ping Yuen initially refused to work on the film, and hoped that by asking for an exorbitant fee, it would turn off the Wachowskis. It didn't. He next formulated what he considered an impossible request. He said that he'd agree only if he had complete control of the fights, and that he trained the actors for four months before they shoot. The Wachowskis complied with his request.

7. Elizabeth: The Golden Age

In the film, when Elizabeth arrives at St. Paul's Cathedral, construction is going on. In real life, St. Paul's actually needed repair work. Director Shekhar Kapur decided to improvise, and gave the workers costumes and period tools to cut real stone that was being installed in the cathedral. The workers in the scene are real-life stonemasons and construction workers.

8. Forrest Gump

Tom Hanks was not paid for this film. Instead, he took percentage points which ultimately netted him in the region of forty million dollars.

9. Django Unchained

When Calvin Candie (Leonardo DiCaprio) smashes his hand on the dinner table, DiCaprio accidentally crushed a small stemmed glass with his palm and really began to bleed. He ignored it, stayed in character, and continued with the scene. Quentin Tarantino was so impressed that he used this take in the final print, and when he called cut, the room erupted in a standing ovation.

10. Titanic

After finding out that she had to be naked in front of Leonardo DiCaprio, Kate Winslet decided to break the ice, and when they first met, she flashed him.

11. Schindler's List

To gather costumes for 20,000 extras, the costume designer took out advertisements seeking clothes. As economic conditions were poor in Poland, many people were eager to sell clothing they still owned from the 1930s and '40s.

12. The Dark Knight

In preparation for his role as The Joker, Heath Ledger hid away in a motel room for about six weeks. During this extended stay of seclusion, Ledger delved deep into the psychology of the character. He devoted himself to developing The Joker's every tic, namely the voice and that sadistic-sounding laugh.

13. John Wick: Chapter 2

Keanu Reeves performed about 95 percent of the fight scenes himself. To prepare for the role, Keanu trained for three months. His training consisted of Judo, Brazilian Jiu-Jitsu, marksmanship, and driving.

14. The Chronicles Of Narnia: The Lion, The Witch And The Wardrobe

Georgie Henley's reaction to Mr. Tumnus at the lamppost is genuine. She had not seen her castmate James McAvoy in his costume before the scene was filmed, so her screams and reaction were real. Georgie's first reaction to the snowy world of Narnia is also genuine. She was carried into the set blindfolded to make her first entrance, and her wide-eyed, delighted reactions to it, all are entirely her own.

15. The Lord Of The Rings: The Fellowship Of The Ring

The cast often had to fly to remote shoot locations by helicopter. Sean Bean (Boromir) was afraid of flying, and would only do it when absolutely necessary. When they were shooting the scenes of the Fellowship crossing the snowy mountains, he'd spend two hours every morning, climbing from the base of the mountain, to the set near the top, already dressed as Boromir. The crew being flown up, could see him from their helicopters.

16. Pretty Woman

Edward (Richard Gere) snapping the necklace case down on Vivian's (Julia Roberts) fingers, was improvised by Gere, and Roberts's reaction (laughter) was totally natural. The filmmakers liked it so much, they decided to leave it in.

17. Interstellar

For a cornfield scene, Christopher Nolan sought to grow five hundred acres of corn, which he learned was feasible from his producing of Man of Steel (2013). The corn was then sold, and actually made a profit.

18. The Terminator

One afternoon during a break in filming, Arnold Schwarzenegger went into a restaurant in downtown L.A. to get some lunch and realized all too late that he was still in Terminator makeup - with a missing eye, exposed jawbone and burned flesh.

19. Star Trek

The sound of the automatic doors opening on the U.S.S. Enterprise, is a Russian train's toilet flushing.

20. Jurassic Park

The sounds the Velociraptors make when communicating is the same sound tortoises make when having sex.

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