The Hobbit: An Unexpected Journey - Trailer 2

Although their goal lies to the East and the wastelands of the Lonely Mountain, first they must escape the goblin tunnels, where Bilbo meets the creature that will change his life forever...Gollum.
Here, alone with Gollum, on the shores of an underground lake, the unassuming Bilbo Baggins not only discovers depths of ingenuity and courage that surprise even him, he also gains possession of Gollum's "precious" ring that holds unexpected and useful qualities... A simple, gold ring that is tied to the fate of all Middle-earth in ways Bilbo cannot begin to know.