Funny you should ask. On Monday I wrenched my back pretty bad because I had my body in poor alignment when I tried to lift something and the pain was excrutiating. Fortunately, from past experience, I knew that inversion of the body works wonders. That day I went to K-Mart and bought an inversion table for $99, a great price. As of Thursday I have had some stiffness but no more pain at all. I use the board several times a day in addition to taking Aleve and icing the area. This solution isn't for everyone, but it sure works for me.
http://www.backreliefstore.com/category/Inversion_Tables?page=all&gclid=CNeiuI3GmYgCFSjWJAodRTPlLQ