The demo was pretty good. ME combat is still not the best thing, and unfortunately that's the majority of the demo. Also all the facial animations are pretty bad. But the universe and the story still seem fantastic.
The Kinect stuff works, but I don't know how much I'll use it. I'll probably use the Quick Save function and maybe some squad commands (though I don't think I'm man enough to bark orders out load at my TV just yet), but saying "open" to open a door instead of just hitting the A button seems extremely silly to me.
I'm guessing the Origin servers being not available is the reason none of the demo unlocks unlocked, right? I will probably play through it again in a few days.