14. Alfonso Cuarón had his three lead actors write an essay about their characters
Before the filming of the third film, 'Harry Potter and the Prisoner of Azkaban', director Alfonso Cuarón had his three lead actors write an essay about their characters from a first-person point of view. In true Hermione fashion, Emma Watson wrote a 16-page essay. Daniel Radcliffe wrote a concise one-page summary while Rupert Grint apparently never turned his in.