Sorries, we've been pretty busy round here. I've got some books that both the animators have bought on their own, and we have in our library here.
The Animator's Survival Kit
Action Anatomy: For Gamers, Animators, and Digital Artists
Stop Staring: Facial Modeling and Animation Done Right
Human Anatomy for Artists: The Elements of Form
Body Language: Advanced 3D Character Rigging
And let's say you have tons of money...Then these are also recommended:
Rhino House
The Animator's Survival Kit Animated
Jason Ryan Animation
I'll try to get some animators to post some more help too.