More hockey stats minutiae
Putting this here so I have half a chance of finding it later: I agree with Puck Prospectus that this article [PDF] is the most interesting analytical novelty of 2010 in hockey. I also don't know how much practical use it is, since you apparently need three seasons of data to make the numbers come out looking realistic. But I've been experimenting with a similar approach to isolating player contributions myself, and it wouldn't surprise me if three years just happens to be how long it takes...