I've been looking at some books but I've never actually went through them but here's a list of books those books that had some good reviews and ratings on Amazon.com & others:

-Learning Autodesk Maya 2009: Foundation (mentioned in previous post above)
-Learning Autodesk Maya 2009: The Special Effects Guide by Autodesk Maya Press
-Learning Autodesk Maya 2009: Modeling & Animation by Autodesk Maya Press
-The Game Artist's Guide to Maya by Michael McKinley
-The Game Animation Guide to Maya by Michael McKinley



These had good reviews:
-Advanced Maya Texturing and Lighting by Lee Lanier
-Maya Professional Tips and Techniques by Lee Lanier
-An Essental Introduction to MAYA Character Rigging with DVD by Cheryl Cabrera
- Body Language: Advanced 3d Character Rigging by Eric Allen & Murdock
-Mental Ray for Maya, 3ds Max, XSI: a 3d Artist's Guide to Rendering by Boaz Livny
-Maya Visual Effects: The Innovator's Guide by Erick Keller
-The art of Maya - An Introduction to 3d Computer Graphics by Autodesk Maya Press
-Maya Techniques: Hyper-Real Creature Creation by Alias Learning tools
-Maya Secret of the Pros by John Kundert-Gibbs, Dariush Derakhshami

What do you guys think of these?