Of 2009, for December 3: Article. What's an article that you read that blew you away? That you shared with all your friends. That you Delicious'd and reference throughout the year.
Nothing "blew me away," but I read in National Geographic about the Golden Quadrilateral in India, a highway connecting four cities in a big loop. It was interesting and I hadn't known it at all before. I mentioned it to a couple of people here at home. I talked with Ravi Bharadwaj a bit about it when he was here. The text of that article and a map.