Math and Movies (Animation at Pixar)

How do 3D animated characters look so smooth? Pixar researcher Tony DeRose explains - with mathematics.

Extra footage: http://youtu.be/2NzTAaYgk4Q

Links below...
Pixar Research: http://graphics.pixar.com/research/
Tony DeRose papers: http://bit.ly/DeRosePapers
Ed Catmull's paper: http://bit.ly/1stJNht