http://wiihacks.blogspot.com/2006/12/nintendo-wii-controlled-smarthome.html
This guy put together a home automation interface using his Nintendo Wii... Pretty cool stuff. Unfortunately he is using X-10 but the same concept can be applied to Z-Wave. When all of the bugs are worked out of the ControlThink SDK in terms of ASP funcionality I plan on making a cool web based interface for access through my Wii and Nintendo DS.