I know that everyone's made the pilgrimage to Mecca Essen (or eagerly casting their gaze towards the Messe), but a bit further north the Nobel prize for Economics went to Schelling and Aumann for Game Theory. Schelling's work is actually very approachable (after he won the Nobel I read up a bit). In any case, this has kicked off a discussion in the economics (and political) blogosphere on the utility of Game Theory.
Slate posted an anti-Schelling article, Daniel Drezner defends him here.
There's discussion on just how useful game theory is. Check out this post on Marginal Revolution and follow the trackbacks.
Mark Kleiman has a nice roundup of links, and a great quote: "If you doubt the utility of game theory, just ask an evolutionary biologist."
Or anyone whose been to Mordor or had to convert a point after attempt.