It's really too bad Apple doesn't get into this market. Start with an AppleTV, add some kind of controller, and tap into the giant market of app developers. Seems like a winning strategy, although it's also safe to argue that the Wiimote, Kinect, and even PS3 Move have upped the ante for casual gaming.

Of course, the Kinect camera has a USB interface and an AppleTV has a USB connector...