OCModShop posted a review on the Microsoft Wireless Windows Media Center Keyboard
A quote from the article:
Microsoft Wireless Media Center Keyboard Review
If you one of the many of people discovering the joys of a Home Theater PC, then you'll want to get as much usefulness from it as you can. O
ther vendors have created Media Center remotes that offer more functionality, but sometimes you just need a keyboard.
There are several wireless keyboards out there, but wouldn't it be great if they had all of your standard Media Center functions integrated right on it? What if the keyboard could be programmed to power your TV? What if analog mouse controls were integrated right on the body? Well, Microsoft's Remote Keyboard for Windows Media Center was developed specifically for Home Theater PCs running Windows Media Center to address these tasks with a single device.
Microsoft Wireless Media Center Keyboard Review