This guy beats his knives into the ground. Keep in mind that most of these tests abuse a knife far beyond what a user would ever subject a blade to. Though I'm not a fan of his test methods they are entertaining.
http://www.knifetests.com/
I prefer this site for knife review information.
http://www.cutleryscience.com/reviews/reviews.html
I have not taken a look at this site yet.
http://www.zknives.com/knives/index.shtml