Even tho I haven't been on my Wii Fit for a while, it's awesome! I spent weeks (if not months) trying to get one, but it was well worth it.
The Wii Fit has tons of fun exercises, that's a given. But it also keeps track of your weight, BMI and tons of other stuff.
It also helps to improve things like your balance and posture.
If you are looking for a way to change up your workout routine, look no further than the Wii Fit.