It looks like Consumer Reports has ranked the most popular and doctor approved weight loss programs and Jenny Craig has come out on top. It looks like the rankings are determined by nutrition, weight loss and the dropout rate. An astounding 92% of participants stayed with Jenny Craig for 2 years. Of course, as they warn and I do as well...that doesn't mean it's right for you. If you like to cook, then eating prepackaged meals isn't going to be something you will stick with. I, however, might give it a try. I'm very good friends with my microwave.
In case you were wondering here were the top rankings overall: