Mike Robertson's writings and DVDs have benefited me immensely as a powerlifter and trainer. If knee health is important to you, check out Mike's new manual and DVD set: Bulletproof Knees.
This package is a major expansion of Mike's article last year on knee health. Bulletproof Knees is the product not only of extensive professional and athletic experience but also Mike's rehabilitation of a severe knee injury.
On a related note, I have a cool interview with Mike that will be up soon.