I have become a fan of the ideas in Chi Running. After running for 20+ years with football knees the skills in the book (and DVD/website) really help eliminate/limit pain and injury.-
One really good example of the wisdom of the Chi Idea.-
There are lots of ideas and theories about staying pain-free- The basics are- TAKE IT EASY, Get REST, Eat Right- Have Fun.
This site has lots of great posts and stories-