My first attempt at a facial rig in Maya using a 'Stop Staring' type rig from Jason Ospia's book. The end product was super fun to play with. All the blendshapes were done using his tapering technique, which is pretty genius I thought. This character is an EARTHWORM despite anything your dirty mind may have cooked up. Jeez.
Here's a rundown of the rig in maya as well.