10 Behind The Scene Facts Of "Harry Potter" Series .

These will make you see the films all over again.

1.Emma Watson might not have gotten the role of Hermione had it been up to her.The casting team held auditions at elementary schools all across Britain to find their Hermione, but when they got to Emma's school, she had no desire to audition (even though everyone else at school did). It was Emma's teacher who convinced her to audition, and she ended up being the last girl that day. To think she got the role after that!

2.Every letter to Harry were actually hand written — TWICE. The first batch of Hogwarts acceptance letters the graphics team hand wrote for the movie turned out to be too heavy for the owls to carry, which meant that they had to individually hand write thousands of them all over again!

3The producers tried to give Daniel Radcliffe green eyes and Hermione buck teeth like in the books, but failed. Sadly, Daniel had a terrible allergic reaction to his green contact lenses and had to stop wearing them, while Emma Watson couldn't speak clearly wearing her false buck teeth.

4.J.K. Rowlings requested that the entire cast be British. The onlymajor exception was the casting of Verne Troyer, AKA Mini-Me from Austin Powers, as Griphook. His American accent was later dubbed over in thefilms.

5.All the food you see in the great hall scenes is 100% real. Director Chris Columbus wanted to capture the elaborate feasts from the books perfectly. The only problem is the food spoiled really easily under the hot production lights and created a super unpleasant odor. That's why for future HP movies, they froze food and created molds to make the fake food look more realistic.

6.Many carswere harmed in the making of the Whomping Willow scene.Fourteen Ford Anglias were wreckedin the filming of the scene where Harry and Ron crashed into the Whomping Willow.

7.Rupert Grint has anactual severe case of arachnophobia. So he didn't have to do much acting in the scene where he and Harry meet Aragog.

8.Hermione was meant to hug Harry AND Ron at the end of the movie when she runs into the Great Hall. Since Emma Watson was too embarrassed to hug the boys in the scene, Christopher Columbus changed it so that she would hug Harry and then begin to hug Ron but get too embarrassed and shake his hand. The change actually worked well to build up their love/hate relationship that continued throughout the books. We all know how that ends.

9.The case of the three Dumbledores. The role of Dumbledore was recast after Richard Harris (the original Dumbledore) sadly passed away shortly after Chamber of Secrets was released. Many people mistakenly believe Ian McKellan took over the role of Dubmledore, but it was actually Michael Gambon who took on the role. The confusion probably stems from Ian's role as the legendary Gandalf in "Lord of the Rings," who looks very similar to Dumbledore.

10.The script prompted J.K. Rowling to first reveal Dumbledore is gay.The original script included a line where Dumbledore talks about a crush he once had on a girl, which led Rowling to clarify that Dumbledore was gay and only ever had a crush on the great wizard Grindelwald. She later made this public information while promoting the final book in the series.