James Woods:

Nice. Creepy as hell, but the rig fits the actions.

Timothy Muller:

Hi there. My advice for you is to strengthen your contact poses. Practice contrapposto and line of action. Also don't be afraid of playing with the character's feet, even just with simple bends. They seem glued to their surfaces which increase the product's sense of stiffness.
Lastly, check out Ed Hook's "Acting for Animators" if you haven't already.
Keep the good work up.