None so far but I haven't used my 360 too much lately.
Eventually I'd like to upgrade to the newer 360. My older 20gb (with HDMI) just doesn't have the space and the newer ones with 250gb are also quieter, which is nice.
Whenever I make that upgrade I might get the bundle with the Kinect. I'm hearing some very good things about it from friends. One has a PS3 with move and says the Kinect is better and that the dance game is incredibly good. I remain rather skeptical I suppose but of all the motion based input devices I think Kinect is the most interesting and could have the biggest impact in the long run as opposed to waggling a controller.