Check this out. Microsoft has design a wired home that amoung other things uses Window CE for the light switches.

"The light switches, operated by a touch screen, run on Microsoft's Windows CE software for small devices. They can be programmed with combinations of light and music, as evidenced by the `romance' button on the touch screen in the bedroom. Oddly enough, the song `Hit the Road Jack' comes through the speakers as the lights dim."

http://www.palmsizepc.com/mar2000-8-1.html