I was accidentally came across this site called Evolver that takes your image and creates a 3D avatar from it. It first creates a “clone” that you use to create you avatar that can even be used in still and animation scenes. The site can link you avatar to all sorts of social networking and gaming sites. Here is me winking like Sarah Palin. My hair is much longer and I have a full beard now but the recreation of my face is eerily close.
Click on the animation to view the site.