And of course, Fred Hatfield, 
Kangaroo's Triple Jumpers OnLine
And I personally recommend the work & book put together by Donnie
Maib, Strength & Conditioning coach, and Dr. Jim Tendall of the United States Kenpo Karate Association. Both are
registered black belts in Kenpo Karate (Parker style), and have a great web site.
Tim Hagan's Strength & Conditioning Page for Hockey
SportStrength,another "Dr.Squat" page