jacob - Incredible site! A very useful tool indeed. I think we can used this to better define the signals and what exactly is going on. This is exciting!
Auburn just because this post exists, i have a book (artistic anatomy) that apparently is the only book who tries to explain in an highly detailed way how the expression muscles work, the name is "The artist's complete guide to facial expressions" by "Gary Faigin". Is simply awesome the work behind that book