I've already started sticking them to the walls of my house to control lights, the thermostat, the garage door etc. This didn't make sense at $400/device but as soon as they hit $100 or so the game was afoot. Now they're so cheap, its literally cheaper to grab one from "the pile" and whip up a nice html5 interface for the task than to buy a dedicated Insteon controller or Nest thermostat. Hell, it was cheaper to auto…
What hardware are you using? I've wanted to try home automation for a while but all I can find is either the lowend stuff (X10) or the really highend stuff that requires a dealer to install it for you.
I've been wanting to get into home automation too. My biggest fear is vendor lock-in. I'd like to hear more about how he gave his garage door a REST API, because that's something I could build my own interface for.