Watch the feet, jumping and sliding all over the place because the animation is not calibrated.
http://www.youtube.com/watch?v=e7g-mxhLkQA&t=8m8s.
One of a thousand sketchy animation issues that leap out as you watch these- otherwise absolutely stellar- gameplay videos.
JAW, I love what you've done and look forward to seeing these kind of issues addressed on launch day.