We have the Wii and the Wii Fit (plus just a bunch of random games). It really is fun! You will be surprised how you will find yourself running all over the room to play tennis (or whatever). The Fit is great because its like you have a trainer getting you to do certain activities. You can chose games (balance and such), yoga or exercises. It is expensive. The Wii costs $199 now (it was more expensive when we got it! Dang!!) and the Fit is like $80 or so. If you are like me and don't like being with other people, especially while exercising, its wonderful and it keeps you motivated.