In my class this winter, Michelle Ladd, Motion Capture Coordinator for "The Lion, Witch, and the Wardrobe" and "The Return of the King" came to talk to us during a shooting break for Narnia. Mo-cap does alot in the movie, especially when it comes to the fauns, centaurs, minotaurs, etc.
I'll put some spoilers up as soon as I can figure out how to do it...