The reason why talking to your computer is somewhat creepy is that we do perceive our computer as an extension of ourselves: the mouse pointer is "us" pointing, Google is an extension of our memory recall power, and so on. The interface is designed to be non-intrusive. Now, talking to your computer would become like talking to yourself. It's mildly creepy since it involves in the best case a split personality, or alternatively the feeling that you are the one who doesn't know squat, and has to ask to someone else. Not nice.
The approach is conceivably different when you ask "Earl Grey, hot". In that case you just give a command in order to receive an item, and who wouldn't want that?

As a further alternative, there is always the Gumstix. But, overall, the Pandaboard looks like a much sweeter deal: for $174 you get a dual-core ARM A9 board with 1GB, DVI output, Bluetooth, and all the goodies. I think I'll get one really soon now.