I'm actually getting quite a bit of use out of my Kinect.
DC 2 - Haven't had much time to play, but I definitely like the "cooler" dance routines compared to what Just Dance has.
Kinect Sports series - I've been playing this on and off, but co-op with my 3 year old son is a total blast.
Fruit Ninja - I love this game, and if you get a little crazy with it, you can definitely get a good workout from playing. I like to use my legs and feet to slice up fruit from time to time.
Sonic Free Riders - Not sure why this game got so many negative reviews. The menu can be a pain to handle, but the game itself is so much fun and a great workout to boot.l
Fighters Uncaged - I know this game is almost universally panned, but I checked out the positive Amazon reviews and decided to take a chance on it. I went through parts of the tutorial, and I know I'm going to have fun playing this game given the fact that I know how I'm supposed to play it.
Your Shape - I tried out this game this morning, and I'm looking forward to making this part of my weekly fitness routine.
Overall, I'm very happy with my Kinect purchase so far. I still haven't gotten to try out Child of Eden, and I still want to eventually purchase the Gunstringer. However, I'm confident that I'm going to get more than my money's worth from the Kinect.