This is a really awesome group of people from many academic backgrounds all coming together to learn more about the human body. They use numerous programs and tracking technologies in order to learn as much as they can about human motion and how it varies between people based on different factors such as weight, mood, and level of tension.

One of the most fun examples of this on the site is the demo for the motion. You can adjust the knobs that control factors such as gender, weight, mood, etc, and even make a parameter for yourself!

BioMotionLab.