This is a cool site to check out if you want to create animated people. If you look around the site, you'll find some animated examples of facial expressions, and the best way to make your figures walk, and even kick a ball. They also have some examples of the best way to set up lighting, something that I definitely found helpful. The site is not the best quality, but if you just read through it a little bit it is helpful.
This video was also really cool. I was wondering how it would be possible to make a claymation that includes water, and this one kind of explains a little bit. Not so high-tech, but really cool. Definitely gets the ideas flowing.