Her nickname on the set is one-take Watson.
Her regular nickname is Em.
Emma fancies Prince William
Chris Columbus on Emma filming the hug scene in the Chamber of Secrets. "I asked Emma to hug Dan, and she said, 'No way,' and that was the day she was the most nervous being on the set. She was like, 'I am not going to hug him, no I'm not.' And I said, 'You've been petrified, this is one of your best friends, if not your best friend, you have to hug him,' I said, 'but you won't hug Ron, because that's where the tension is.'"
That is not actually Emma Watson in the petrified scenes. It is a wax model of her. During this break, she went back to school.