Wii fit has a whole heap of stuff on it.
Basically it is broken down into sections Muscle building, aerobics and balance games. My fav is the aerobics which has running, hula hoooping, step aerobics. Balance has yoga and muscle building has boxing, skiing etc. There are 8 games in each different category ( I actually think there are 4 categories but can't remember the other one!), and as you go you unlock new challenges. After day 2 I am hooked on the hula hooping, and am already in a challenge with a mexican lady on FB.