It has now been awhile since we purchased the Kinect. I have to say that the entire family enjoys it a lot. While there are some buggy games out there (I'm looking at you, Zumba), if you do your research ahead of time, many of the games are tons of fun. My daughter's favorite is Kinect Adventures, which comes with the system. To be specific, she likes the Rallyball mini-game. It's a lot like Racquetball but your hand is the racquet. The goal is to use the balls to break boxes. You hit the balls with various parts of your body. It is a pretty interesting game. My favorite is Dance Central. Then again, I really like to dance. The moves are easy enough for anyone to pick up and you still get a decent workout from it. I haven't tried the harder levels yet. I'm working my way up to it.
I'm sad that there are developers throwing out buggy games for the Kinect. I really wanted to play the Zumba game. However, everything that I have read about it says it is terrible. C'mon guys, this is an awesome system. Take the time to develop the game properly before throwing it out there. The users will love you much more for it!