Tolkien fans around the world are preparing for the December 14 release of 'The Hobbit: An Unexpected Journey' in many different ways. Some have gone back to painstakingly watch Peter Jackson's original 'Lord of the Rings' trilogy (even if it takes place afterward), while others continue gluing their own hair to prosthetic feet in preparation for attending the release in costume. But how is life-long Tolkien fan Stephen Colbert preparing? With a full week of 'The Colbert Report' dedicated to the film, and spotlighting its cast as guests! Who will be in attendance?