Almost everyone in the Harry Potter films was perfectly cast. In case you're in doubt, just check out these behind-the-scenes facts!
1. Evanna Lynch made Luna's dirigible plum earrings.
2. Tom Felton stole so much food that they had to sew his pockets shut.
3. When the director of Prisoner of Azkaban asked the three main actors to write essays on their characters, Emma wrote 16 pages while Rupert didn't do it at all.
4. Tom Felton lied about having read Harry Potter at his audition.
This is so in character I can't even.
5. Rupert Grint is terrified of spiders in real life.
6. Gary Oldman (Sirius) helped teach Daniel Radcliffe guitar.
7. Emma Watson is incredibly smart and even attended Brown University while filming the movies.
8. Which meant Emma spent less time on set and had multiple body doubles.
9. James and Oliver Phelps, who played the Weasley twins, would play pranks on set.
10. Rupert was doodling an unflattering drawing of Alan Rickman while filming a scene in Potions when he realized Rickman was standing right behind him.
11. Alan Rickman came up with the idea to embarrass Daniel Radcliffe by putting a remote-controlled fart machine in his sleeping bag during a scene where he was lying next to his crush.
12. Maggie Smith, who played McGonagall, was in the middle of cancer treatment while filming the sixth movie.
13. Rupert Grint had a crush on Emma Watson while filming.
14. Emma Watson was too embarrassed to hug both Rupert and Dan in the second film, so director Chris Columbus had her just hug Dan, then get too uncomfortable to hug Rupert.
15. Rickman was an expert at stealing stuff from set.
16. Daniel Radcliffe saw that Richard Harris (the original Dumbledore) was having trouble remembering his lines, so he pretended he needed practice and asked him to run lines.
17. Rupert Grint rapped at his audition.
18. When Rickman found out a child with cancer visiting set was denied his request to be in the film, he went into "Snape Mode" and demanded to know why.
19. And finally, Alan Rickman knew that Snape loved Lily, and often argued with directors over their directions on how to portray Snape. He ended up frustrated with director David Yates, who he felt cared more about teen audience appeal.
Convinced?? I hope so.
