I tried it for about 2 days, then fell off the wagon. Probably not helpful
I've seen the video, which isn't called Body For Life, and it worked for those people.
A friend of mine who was extremely overweight started to lose weight by eating a mostly raw diet, with tons of veggies and fruit. After he had lost a bunch of weight (10 - 20 pounds over the course of a month or two), he started doing Body For Life and had great results. He lost about 80 more pounds doing that.
I personally think the program is great as a catch all to lose weight, if you're overweight. If you're not really overweight, then I'd go with something more tailored to you.
That's my 2 cents.