Your iPhone can do everything except your laundry, until now… This was our pitch at Startup Weekend in San Francisco this weekend, where we wired up such things as lights, fans, door opening/closing sensors, and motion detectors to demonstrate the power of home automation. See this video below for an idea. (The guy in the video is a friend of Aswath, whom I worked with at Startup Weekend)
If you thought the above video was cool, you should see what we have in store for TalkingHome. This weekend, I created a mobile web app (for iPhone, iPad, Android, etc.) that provides a speech interface (and touch interface) to further enhance the automation experience. And this is just a rough first iteration.