The second Nakamura-Volokitin game (with the infamous 1.e4 c5 2.Qh5?!? opening) has received a lot of attention on the net, but it was actually their first encounter at Lausanne that deserves the most attention. Jon Speelman has recently annotated it in his excellent Guardian chess column. You can play over the game online at the excellent Chessgames.com site (with various added kibitzing). I think it is one of the most thoroughly well-played GM games I have seen in a while.