I was in your city a few hours ago at PAX. Awesome time. Uncharted 2 was playable, as was God of War III. It was basically all the fall games playable, a few 2010 (Heavy Rain).
The microsoft booth, was okay. They had 12 places to Play Left 4 dead 2. One station to play a few XBLA games. Halo ODST, and Forza 3. They seemed to place to much on ODST and L4D. Their indy booth games were toally fun. I like Dust, it won at the Indie contest they held.
I went to the Panel they held for how to keep the community under control. Some nice ban stories, but mostly fun to hear how they have to manually process all the complaints on XBLive.