LEGO has released the designer video for the LEGO The Hobbit An Unexpected Gathering (79003) on their YouTube page. Bjarke Lykke Madsen, Senior Designer, describes the set and the minifigures in a little more detail on The Hobbit minisite.
Gandalf the Grey has invited the Dwarves to Bag End — the Hobbit home of Bilbo Baggins. At first, Bilbo is not happy about cooking for so many unexpected and rude guests! But when they invite him to join their quest to The Lonely Mountain, the Company set out on their epic adventure.