I have it. I enjoy it a lot!! The exercises really get you sweating right away. When you first start up they take you through a serious of exercises to see what would be the best place for you to start (I think it goes beginner, easy, challenging, hard and extreme). You deal pretty much with Bob when you start off, but once you set up a profile you can choose who you want to train with; Jillian, Bob or both. I chose both to take advantage of both. Jillian does not do the amount of yelling she does on the show. I read something by her saying that she didn't have anything to do with this video game, but she yells in her own game (I was tempted to buy it but the reviews were awful!!). You weight in once a week and the challenges are pretty fun. Sometimes it is hard for the remote to pick up with the sensor on some exercises, which can be especially annoying when you are doing the exercise correctly but the machine thinks differently. All in all I really enjoy it a lot. I've been using it for about a week and I already see a difference in my tone and energy level.
I definitely recommend it!!