"The makeup girl had a minor heart attack," Robbie Coltrane (Rubeus Hagrid) later recalled, "before she figured out it was a hoax."
[Daniel Radcliffe tried reading the first Harry Potter book when he was eight years old but was unable to finish it. After being cast as Harry, he finished the book, and declared that he was, in fact, "a tiny bit like Harry." How so? "I'd like to have an owl," he explained. "Yeah, that's the tiny bit, actually."]