You know you’re a geek if you not only setup Chrismas lights, but sync those lights to a soundtrack. Snopes reveals the name and city of this really cool display, along with some good specs.
I’m sure that this is going to become more common in the future.
Edit: 1/3/06: Well, guess what I found? Another Christmas light show, very similar to the original above, but with a complete website donated to the light show! Go to the videos section to see other shows as well.