Check out feldenkraisresources.com. They have lots of stuff.
To try it out, this site has some lessons for free:
http://www-ccs.ucsd.edu/~falk/openatm/
If you left-click on a specific lesson, it will play on your computer. You can right-click to download the lessons.
If you're not familiar with Feldenkrais:
Feldenkrais is a movement/body awareness technique that I've found really helpful in improving my body awareness, flexibility, and posture. If you want to give it a try, the site has a series of lessons you can listen to and follow. The titles listed for the lessons aren't that informative, but a lot of lessons end up involving most of the body anyway, so it's worth it to experiment with different lessons.
If you haven't done Feldenkrais before, a couple of basic principles will help:
Bigger is not better. Small movements done smoothly and with awareness are more effective. The point of Feldenkrais is not to build or stretch muscle but to train the mind-muscle connection, so the quality and experience of the movement is more important than the exertion, speed, or range of motion. If you're moving too big or too fast to really be aware of what the movement feels like inside yourself, slow down and move smaller.
Enjoy the movement. Really try to take pleasure in it. There should be no pain in Feldenkrais. If something hurts, make the motion even smaller or adjust your position to be more comfortable. If you can't do it at all without pain, just lie there and visualize/imagine doing the motion. Your brain will react at least partly as if you are doing the motion and you'll still get some benefit from it. In fact, I've sometimes seen more dramatic results from imagining a movement than from doing it (too bad dancing's not like that!).
Enjoy!