About the voice control stuff... I think we are lightyears away from voice being an integral part of how we interact with computers.
People say Google does it well, and I agree, except when it doesn't work right and you have to repeat yourself, the same thing with Apple, Microsoft, and Amazon. Also it just doesn't feel natural, and it annoys EVERYONE around you.
I was near a guy the other day who was dictating his text messages back to someone, and it was the most unnatural, ridiculous things I have witnessed in a long time when it comes to human interfaces.
It doesn't mean we should stop trying, however, and I actually think MS was taking a bold step making Kinect a pack-in. It really is too bad they backtracked.