There's nothing wrong with Tae Bo itself. If it makes you move, then so be it. However, I agree that you should stay away from things like this in general. Especially if it makes promises for you to lose weight in a certain time frame.
If you are really serious about losing weight, then the best plan of action would be to first look at your diet and your physical routine. Any guy can go out and exercise, but the serious ones always look at his or her diet. And diet doesn't mean following some crazy program; it means making real life changes that will last you a lifetime. It's the hardest part of any weight lost, and it's easily the one thing that is misunderstood by many, and the sole reason why many win part of the battle, but lose the war some time later.
Come post in the weight lost section to get more information. We can really help you out if you're serious about making a change in your life.