After tearing apart the Nest then re-assembling, it actually continued to function (a first for me!). I was so impressed with the thing that I stayed up way late to document the tear down. I have nothing but very positive things to say about the hardware design, website design, and user interface design of the Nest. It's slick. Really slick. I consider myself an amateur when it comes to consumer electronics so take this review with a grain of salt. But whoa - I just turned off my heat while writing this tutorial! Welcome to the future.
Full article: http://www.sparkfun.com/tutorials/334