I have heard of it and I've heard it works well. Although it requires room to move around and you have to have access to barbells. It can really shred you though.

I got the same type of intense program....Insanity with Shawn T. It was really intense and not great for my little second floor apartment, with the jumping and stuff. My suggestion, go for it?!!! Maybe u can get an inexpensive used package of DVDs on eBay.