I recently had the opportunity to test new wireless keyboard from Adesso. This could be the closest to a perfect wireless keyboard for Windows Media Center. There are lots of wireless keyboards out there that use their own methods to connect. Most are good to about 6-8 feet before the signal gets to the point where the keyboard is no longer usable. Adesso uses 2.4 Ghz radio frequency. This is the same signal that wireless phones and wireless networks use. You should be good up to 50 ft. or more with this. (the keyboard supports up to 100 ft. but you may requre binoculars to see the screen at that distance 🙂
The keyboard also has an integrated trackball. The mouse buttons are located on the top, as well as another set under your trigger fingers .Scroll wheel on the left and left click on the right. The group of buttons on the top left are all related to media controls. Stop, Play, FF, REW etc.
Setup was the easiest process I have ever seen. There is a USB ‘dongle’ that you plug into any available USB slot. You push the button on the dongle, and an LED starts flashing. You push the ID button on the upper left of the keyboard and you are ready to go.