Here's an fbx, just drop it in the scene. The default import options should set it up with the Skinned Mesh Renderer, which will show the three "BlendShapes" I've exported with it. The Action just needs to give us control of those floats I would think.
Could open up all kinds of possibilities, characters that get fatter/thinner, face phoneme animation, etc. I'm looking forward to trying some things out.