Does Anyone Wii Fit?

I'm curious as to whether anyone else on here has ever used the Wii Fit system. I've been using it for 3 weeks now and the results (of my self imposed obsession) are way above the expectations I had when I bought it. If you've got it, I'd like to know what you think of it? If you've not got it and you have a strong opinion on it, I'd like to know the why of it, too. Cheers!

My daughter is getting it for Christmas, she loves how interactive the games are and so do I, you can really work up a sweat.

I'm not doing fitness really on it, but the game is a real work out, try the boxing it's great!

Lost 17lbs since September 2nd. Yay me!