JK Rowling's all conquering apprentice wizard gets his first film outing. Enrolled at Hogwarts school of wizardry and witchcraft the young Harry is soon up to his neck with trolls, evil wizards and hockey on a broomstick. 'The Philosopher's Stone' is a slick entry to the world of Harry Potter, not quite as engaging as it could have been, but an amiable way to while away a couple of hours.