Very cool. I have some PIC micro controllers and thermistors I was doing some breadboard experimentation with several years back to monitor temperature in some data center server cages, but never brought it to fruition. Was definitely a fun project. Should all still work, but I don't have a bench power supply at the moment.
I run most of my home automation stuff over X-10 at the moment, but I'd love to find the time to integrate some of this new-fangled stuff into my arsenal.