Do metrics blind our perception? There is perhaps a legitimate risk that you get only what you quantify, but you must ask the question, "how important are the things we cannot quantify?"
Listen to Larry, for he is wise. I bet you didn't think linguistics had anything to do with sabermetrics. I would say something clever but I would distort his provocative intent.
At what price Josh Johnson, or why overpaying in prospects can sometimes be worth it. Featuring Sky Kalkman's Trade Value Calculator.
Andrew Gelman's handy statistical lexicon. Now newly updated!
A different look at UZR projections from Steve Sommer. Maybe it's wrong, since Erik FanShotted it, but if linking to this is wrong, I don't want to be right.