I found this on digg.com today that stood out amongst the rest (due to the fact of me thinking about Christmas lights lately), a homeowner has setup a website where the public can control his Christmas lights. You can access the site here and join the queue to get into control.

He has also given some details on how it all works here. I've been thinking lately of creating a system that syncs with music, I think that would definitely make the biggest difference on my street. The only thing I need to create the lighting system is time, which I don't get much of.