There are already quite a number of sports games on Xbox 360 Kinect. Now, Nike and Kinect have come up with Nike+ Kinect Training. It is like a personal trainer on your fitness. It also comes with a Windows Phone Companion App.
And it has added social media into it. Challenge your friends. See the scoreboard and also use the companion app as a reminder for the challenges. The Xbox website states 30th October 2012 as its release date.