Microsoft just announced an application called SmartGlass that utilizes the mobile devices to access Xbox and watch it in TV screen. This means you can play the games at Xbox through mobile device by looking at your TV screen.
I would say SmartGlass is a great technolog mostly because it has all the capabilities of X-box 360. For me, i see it being even better than Apple's AirPlay and i think it is only a matter of time before users go for it.
You can help the HubPages community highlight top quality content by ranking this answer up or down.