Pottermore is a unique and free-to-use online experience, built around the Harry Potter books, created for a new digital generation of readers who can explore, share and participate in the stories, showcase their creativity and discover new information about the world of Harry Potter from J.

ENGADGET: Harry Potter e-books now available to muggles

In 2010, the resort began offering its guests access to the popular Wizarding World of Harry Potter area an hour before the gate opens to the general public.

WSJ: How To Get More Theme Park Perks

Rounding out the top five at the box office: Shrek the Third, Transformers, Pirates of the Caribbean: At World's End and Harry Potter and the Order of the Phoenix.

FORBES: Magazine Article

The park saw a 30.2% increase in visitors to 6 million thanks mostly to the new Wizarding World of Harry Potter.

FORBES: Harry Potter Paying Off For Comcast

LONDON, England (Reuters) -- The creator of Harry Potter, the world's most popular boy wizard, is set to cast a spell over "The Simpsons, " her spokeswoman said Wednesday.

CNN: Rowling

Heroes is one of the fastest-growing online games ever, the online world's equivalent of such out-of-nowhere hits as Harry Potter in books and The Blair Witch Project in film.

FORBES: Ordinary Hero

Seth Siegel, head of the licensing division of The Beanstalk Group, one of the world's top trademark-licensing agencies, reckons that a hot property such as Harry Potter could have generated 200-300 product licences in America alone.

ECONOMIST: Harry Potter and the publishing goldmine

For a fictional character, Harry Potter has worked a lot of magic in the real world.

FORBES: Harry Potter, Science Teacher