Squash and Stretch Tutuorial

Stretch rigging:

This tutorial guides the user through setting up a squash and stretch expression, and an attribute that can control the degree of stretchiness. It goes step by step through the math behind expressions, allowing the user to understand why the expression enables this essential of cartoon animation.

I am definitely interested in throwing this on Sleasel. I'll have to do it after I get the rest of the rig set up, but they say this will work over most any preexisting IK set.