In the charming new trailer for Peter Jackson's The Hobbit, Gandalf taps Bilbo Baggins for a new adventure. Though the titular halfling is at first reluctant, he eventually embarks on an iconic journey. Bilbo swordfights, climbs mountains, explores caves and encounters trolls underground. But through it all, Bilbo keeps his sense of humor and enthusiasm, even when dealing with Gollum. Part 1 of The Hobbit trilogy is set for a December 14th release.