[Ogre]

I did this a few years ago using text messages and Twilio. Not quite as slick as "Siri, open the garage", but it worked! http://rumsey.org/blog/2011/11/voice-controlled-garage-door/

"Siri, text house open the garage" was as close as I got.

[coldpie]

You know, I don't hate that as a user experience. It kinda turns the house into an "intelligent" entity. "Siri, text house, I'll be home in 5 minutes" and it would turn on the lights five minutes from now or whatever you like.