Kinect is now available in the US -- Xbox LIVE Gold members will be able to video chat with friends from their TVs using "Video Kinect" that using Kinect camera. And not only can you video chat from Xbox to Xbox, you can also video chat with your Messenger friends and family from your TV set to their PC or Mac with a webcam, using Windows Live Messenger.
Just link your Xbox Live Gamertag to Live ID that you use for Messenger, sign in on console. Video Kinect is accessible through Kinect Hub in Xbox Dashboard. When looking through your contacts on Kinect, your Messenger friends show up just like your Xbox Live friends do. When you start chat with one of them, they see a Messenger notification on their PC, asking if they want to start a video chat with you.
Once your friend accepts, the experience for them is exactly the same as any other video chat. They can still resize the window, make it full screen, and IM with other people. On Xbox side, it appears exactly as if you had started a video chat with an Xbox Live friend, except your friend doesn't need to have a Kinect or even an Xbox, just a PC! As you chat, you can also move around your living room and Kinect's smart cameras will follow you as you move to always keep you in frame. Even if more people want to chat, the cameras will reframe so that everyone is included.
More Info: Video Kinect