I did weight watchers years ago and lost 25 pounds on it. It worked well for me. The points system became annoying to me so I just went back to counting calories and drinking a slim fast shake everyday. This seems to work well for me.
I've almost lost the 12 pounds I put on from the zyprexa PRN. I hate that shyt. Keeps me safe when unwell but man does it ever pack on the pounds!