WeightWatchers Online is the best. You don't have to go to meetings, and they don't make your menu for you like eDiets (eDiets is great, but they make a whole new menu for you instead of teaching you how to modify you're current menu). So I had better luck with WW Online.
www.weightwatchers.com. It's like $17/month. Lost over 18 lbs and it was pretty easy. People kept asking me how I did it and I've referred them all there. Plus, you get to count your cycling and eat more in compensation, so it really rewards you for exercise!!!!