http://www.doschdesign.com/products/3d/Animated_Humans_for_Cinema4D.html
Take a look at this collection, if time is money, you'll come out way ahead.
If you want to use a mocap file and rig it to your model, look here:
http://www.digimation.com/home/
search for free mocap400, there is a collection of 6 free motion capture files