With Harry Potter and the Order of the Phoenix -- the fifth film in the Harry Potter universe -- ready to fly into theaters all over the world this summer, it's the perfect time to test your knowledge of all things wizardly and wonderful. Just how many books has author J.K. Rowling sold? What Hollywood superstar did "Hagrid" once work for? And which character can change into a cat? Take our Potter pop quiz and see if you're a wiz... or a mere Muggle.
