I was pretty entertained by the conference.
Fable, although on rails, looked cool to me with the things you could do with the spells and the Forza 4 trailer, which supposedly was "all in-game", imo came eerily close to how the first GT5 CGI trailer looked, fantastic graphics.
Dance Central 2 with 2 players and the possibilities of those Kinect apps are things I liked as well.
All in all graphically all the games (maybe with the exception of Star Wars Kinect) were impressively polished, even the casual games.
Still that's not enough for me to go out and buy a 360+Kinect ;), but I can imagine having a lot of fun at a Dance Central 2 party.