Interestingly, I wasn’t the one that tried this. My customer did.
The Microsoft Wireless Entertainment Desktop 7000 keyboard works just fine on an Xbox 360. This means that you can keep a Wireless keyboard nearby and anytime you want to tap out a message or you have to enter in one of those god-awful 25 character redemption codes, you can use a keyboard to do so.
The arrow keys work, the ENTER key works like the "Start" button, everything. It’s actually pretty cool.
LINK: http://www.microsoft.com/hardware/mouseandkeyboard/productdetails.aspx?pid=081
