I have a lot of fitness games (all my fitness coaches and also EA sports 1 and 2, Wii fit), I even got my shape, but this is the best one for me. The music is good, the exercises are versatile, it's nice to dance and work on your condition at the same time. There is even boxing in here and jogging, but I like the dances the best.
The programme works also great, you steadily dance more every day. If you skip a day, no problem. Two little minuses: the grapics don't look very good on a 50" tv and you work overall on your condition, so you don't do sit ups f.E. (but this you can do with the other games). Money well spend, especially since the price dropped Euro 10,00 the last 6 months.