The general exercises are just like any other exercise dvd with an instructor to mirror the movements of (except it can sense you, so you can't cheat).
The 'exciting' bit where you're running through the Aztec half kills you with running, jumping and squatting but still manages to be boring. It doesn't pick up your moves properly and you get stuck in parts. (death by star jumps).
Also, any information on it is tiny and in a colour you can hardly see. If you just move your right arm slightly the wrong way on the menu it takes you right back to the beginning each time which is really annoying.
Unless you're already fit and fancy a challenge, I really wouldn't buy this. I thought it would be like you're in a game, but the graphics aren't startling.
I've found Dance Central which came with the Kinect to be a lot more fun!