Controlling as many things as possible from your phone is a good idea. And Microsoft has an interesting one: controlling your Kinect using a phone. Not just any phone, though. You need a Windows Phone 7. Here’s a video showing a Windows Phone handset being used to control Xbox Kinect:
There are about 50 million Xbox gamers worldwide. This Windows Phone 7 control elements for Xbox gaming is probably a move to open up WP7 interest to this millions of potential buyers.