Over the past few weeks, I have become addicted to Nate Silver's New York Times Blog, "538," which analyzes the polling on the presidential election. A University of Chicago math prodigy, Silver made his name analyzing baseball statistics--and then transferred his skills from batting to the ballot box.What I find tremendously impressive about him is his natural ability as a teacher. He is a great writer, and explains things clearly, concisely, and non-polemically. The mysterious world of polling has become a lot clearer thanks to him.I suspect that a whole course in statistics could be structured around his blog. Has anybody done anything like that?