Microsoft's SmartGlass app will let you control your Xbox 360 from your Android device
Microsoft's SmartGlass is a product that will probably become a staple of platforms, especially game consoles, as we move forward. The idea is partially for your mobile device to be something of a remote control for your system, but it goes well beyond that. And, to make things better, Microsoft isn't keeping it proprietary, and has just released the Xbox SmartGlass app for Android devices.
Well, not every Android device. The app requires Android 4.0 or higher, so you'll need to be at least on Ice Cream Sandwich to get the goods, and it isn't currently available for Android tablets. It seems likely that will change over time though.
So, if you're an Xbox 360 user, you'll definitely want to give this a shot. The Xbox SmartGlass app is available for free in the Google Play Store.