(slightly) Related:
<a href="http://www.gdcvault.com/play/1020583/Animation-Bootcamp-An-Indie-Approach" rel="nofollow">http://www.gdcvault.com/play/1020583/Animation-Bootcamp-An-I...</a><p>Really impressive animation generation using just a handful of keyframes and clever use of interpolation.
GaitSym is an awesome piece of open source software that has been used to model how dinosaurs walked, amongst other things.<p><a href="http://www.animalsimulation.org/" rel="nofollow">http://www.animalsimulation.org/</a>