Thanks for the replies, I knew it wouldn't be just me that had that idea.
I looked into a basic version of allowing speach back to you, you can create your own "chatbot"
http://www.youtube.com/watch?v=a6Z_xpVAtYQSo when you ask a question you can get a reply that you had already typed in, this is fine for the first or 2nd time in front of your friends! but would get a bit boring, I then thought you can add "random" into the replies, so you could have as many replies as you can think of to the one question.
eg:
Computer, .. yes... What's missing in my life.... (random 1) if you're talking to me then I'd say you need to get out more.
(random 2) More money
and so on, selecting only 1 random answer at a time.
I've seen the youtube clips with BVC (i think dave?) where he asked the time, that blew me away and got me interested in the whole control house and talk back thing.
I've just got myself a phone watch £50 from china and it's really good, it does have blue tooth, I know from the above posts the mic problem not having it near enough all through the house, I know blue tooth doesn't have a great range but if it's on your wrist then half the battle is done?