Ooh, what a great topic! I've been very into Yoga the last few months. Sheldon and I have been going to a "parters yoga" class where the instructor has us work off of eachother in various ways. It just ended last week, so I may have to check out some videos or other classes.
My sister does a lot of yoga, and she recommended a website that has a new video every day to watch: www.yogatoday.com
Go to their "download center" to view archives and today's class. I haven't watched any classes yet, but the site looks very good!
I bought several books on Amazon last month. I bought this book
as my comprehensive reference book, and I've been enjoying it very much.