I've had kinect for at least two days now, and I'm having a blast. After coming home around 1 a.m., I set up kinect (and it was pretty easy too), and i went to sleep. When I woke up, i invited my neighbor over to play(he was pretty skeptical, though).
So the first game we decided to play was dance central, and it was pretty fun, but I did have to move the furniture around as we kept bumping into stuff. Next up we played kinect adventures. Rafting was pretty fun, and we played around with the mini games. After us horsing around, I decided to share the pictures kinect took, and it was easy as pressing that "easy" button.
My neighbor left soon, and i decided to try kinectimals, and while it was fun, it didn't offer much to my disappointment, but still, i had fun playing around with my pet tiger "suda51".
Browsing the dashboard was easy and quick, and kinect was responsive to my commands. I had a video conversation with a friend of mine, and whenever i moved, it would follow me.
Now the only problems I had were avoidable. Kinect went nuts when my mini heater was on, and I when I put it away is when kinect stop panning in and out. And while I was watching a movie using zune, my neighbor yelled "xbox, turn off!". As expected, my xbox turned off, and after shutting my windows was I able to watch the movie in peace(zune thankfully saves where i left off).
Overall, kinect is a great peripheral that any 360 owner should buy, and anyone planning to buy an xbox should buy.