During the filming of the kissing scene between the horcrux versions of Harry and Hermione in the final film, Rupert Grint was removed from the set for laughing too much.
While filming “Harry Potter and the Prisoner of Azkaban,” Tom Felton’s Hogwarts robes had their pockets sewn shut because he kept trying to sneak food onto the set.
One of the flying cars used in “Harry Potter and the Chamber of Secrets” was stolen off the set. It was discovered seven months later when an anonymous caller informed police of its whereabouts.
M.O. McGonagall is listed on one of the Quidditch trophies in Harry Potter and the Sorcerer’s Stone. Could Professor McGonagall have been a renowned Quidditch player back in the day? It would certainly explain her enthusiasm for the sport.
People had trouble pronouncing Hermione’s name, so Rowling had her sound it out for Viktor Krum in “Harry Potter and the Goblet of Fire.”
Forty versions of Salazar Slytherin’s infamous locket had to be created to accommodate Harry and Ron’s failed attempts to destroy it during filming.
When “Harry Potter and the Prisoner of Azkaban” was released in Great Britain, the publisher asked stores not to sell the book until schools were closed for the day to prevent truancy.
In order to become acquainted with the films’ three main stars, director Alfonso Cuaron had each of them write an essay about their characters. True to their characters, Emma Watson wrote a 16-page essay, Daniel Radcliffe wrote a simple, one-page paper, and Rupert Grint never even turned his in.