I don't know if this is the right forum. A bunch of people in that One Question thread said that D&D was their guilty pleasure.
I played D&D for the first time last Saturday, and it was done entirely online. We did it via http://rptools.net/doku.php. I'm not the GM, but I think he basically had to scan in the maps he wanted to use, and create the tokens that each character wanted to use. Dice rolls are done entirely in chat (visible to everyone). There are a bunch of more options you can choose to use, but they're not required.
Just wanted to let everyone who plays know about it (and if someone on here wanted to GM, I'd gladly play a second adventure ;-)).
My best friend is doing the Weight Watcher points thing and she has lost about 15 lbs in the past 5 weeks. I'm thinking of doing it myself. As long as you don't cheat and track all everything you eat and all the workouts you do, it will work.