[Frondo]

Actually, I'd like to second how impressed I am with Cortana. I got a windows phone a little while ago (really cheap, no contract, no love for the Android interface, etc) and was a bit skeptical of how useful it'd be at first.

After trying to ask it more and more natural-language questions, and having it speak useful answers back to me, it feels more and more like I'm in Star Trek.

I'm not usually that impressed by technology anymore (i.e. I still think lots of things are cool, but seldom do they surprise me), after being in the field for 30 years, but Cortana impresses the heck out of me.