-- and I haven't even read it yet. Kelly McGonigal has written a book Yoga for Pain Relief: Simple Practices to Calm Your Mind & Heal Your Chronic Pain (New Harbinger Publications, 2009). Kelly is a health psychologist at Stanford University (and got the PhD to prove it) and teaches multiple classes on campus and in the San Francisco area, as well as workshops and teacher training. She is also the editor of the International Journal of Yoga Therapy, a peer-reviewed journal of research on yoga and meditation.
Why am I so sure that Kelly's book would be worth reading? Because I took an online course on the question of "Can Yoga Really Change Your Life?" and I followed her career over the past six year. She was instrumental in steering me through the first year (maybe, more) of my yoga immersion. She came to yoga because of her own pain, helped others by becoming a teacher, applied the rigors of Western scientific methodology to yoga and finally shared her knowledge, skills and gifts by writing about yoga and editing others' articles.
I'll tell you more once I get my hands on the book.
Postscript: Kelly has contacted me and offered to send me the book.
