I posted this in another thread but I agree about the voice commands.
I had taken a break from playing and left the Xbox on at the dashboard with Kinect Sports in the drive. As I was walking back towards my TV area I said "Xbox play disc" and by the time I settled in the game was already booting. It's hard to explain how cool it feels unless you do it but it's very slick. In a normal situation I would have had to find the controller, wait for it to turn on and then started the game.
I also love the automatic sign in with Kinect ID. It's amazing when you step in front of a game and it just recognizes you and brings in your avatar.
Of course the games themselves have been a lot of fun. I've played Kinectimals for a lot longer than I should probably admit!
@Skeeuk - You can talk in a regular voice, some people have reported it even working with a whisper. Kinect has a very advanced listening system and what most people don't know is it uses the depth sensor to figure out where your head is (when you're in view) so it knows where to pinpoint it's listening and filter out stuff coming from other parts of the room.
Check out this video to see how it works even while loud music is playing - http://kotaku.com/5680932/examining-kinects-minority-report-effect
