This is Apple TV.

It's a small black box that streams from your computer's iTunes application all the music and video you want to treat your senses to, linking directly to your television with an HDMI cable.  Good stuff, yeah?  You can use an iOS iDevice (iPod Touch, iPad, iPhone) to control the box, as well as the little silver remote control that comes with it. 

So...  What if you were to hack it so that it supported iOS applications?  Apple TV comes complete with the Apple A4 chip present in the iPad and iPhone 4, so it's perfectly capable.  What you end up with, if bespoke iOS applications were made for the Apple TV, is a console, with perhaps the remote as a controller, if not an iDevice.  Could we be seeing N.O.V.A. in rather stunning 1080p in the not too distant future?  Might we perhaps be playing the next Call of Duty game on Xbox 360, PS3 and Apple TV?  We know that the Mac doesn't work terribly well as a gaming device; it has its flaws, but what if they decided that Apple TV was the way to go with introducing a low-cost (£99) console into people's homes with low cost games (however much the apps are, so anything from free - £5.99, more for bigger games, perhaps).  What if, what if, what if...