Check this video if you are into face rigging or modelling. Latest Gollum facial (and neck) setup by Weta. And a great emotional performance in the movie. There are more behind the scenes on The Hobbit character rigging and 2-parts demo of the Hulk setup from latest Avengers.
Making of - Gollum - The Hobbit An Unexpected Journey by Weta Digital from CGMeetUp.net on Vimeo.