I have. It's a pretty nifty device...but like all such devices, the application isn't always there. I was impressed by the 1-to-1 control and real-time image capturing in Your Shape, but for gaming gamers, the true test will be Child of Eden. The version I played over a month ago showed promise, but was still quiet buggy.

I've played Kinect once. It was at a mini-house party with about eight people, which seems to be the ideal situation for the device: have a few beers, play some Kinect Adventures, and laugh at how goofy everyone looks flailing around. I could not, however, see myself (or anyone, for that matter) getting much use out of Kinect outside of social situations. But the technology is still young, so I could be totally wrong in a few year's time.