The latest in Martin's A Song of Ice and Fire, A Dance with Dragons. So far it pretty good, I like the Tyrion chapters the best. The opening prologue is pretty interesting and I am sure many will mine it for ideas for their fantasy campaign. It is an interesting insight into what many gamers would consider a monster/villain point of view.
To me the Old School Renaissance is not about playing a particular set of rules in a particular way, the dungeon crawl. It is about going back to the roots of our hobby and seeing what we could do differently. What avenues were not explored because of the commercial and personal interests of the game designers of the time.