'The Pirate' is a new Cartoon Network bump from Sweden-based Meindbender. It's incredibly not stop motion but all CG animation. The realistically shaded/lit imagery make it look particularly three dimensional. There is more on Meindbender and how they create their organic aesthetic here:
Also coming sometime in 2012 is a new Aardman feature film Pirates! Pirates is a stop motion animated movie directed by Aardman co-founder and Chicken Run helmer Peter Lord. An adaptation of Gideon Defoe‘s cult book’s about hapless pirates who journey to London, meet Charles Darwin and a talking chimp named Mister Bobo. Not much in the way of imagery yet but here is a picture of some early concept drawing.