You know guys? Maybe after your cats have been on a vet-recommended diet, you could post after pictures? It would be a powerful thread for many cat owners out there to see the vast difference. One thing with overweight cats, is to introduce fiber into their diets- canned pumpkin, mashed green beans, even a tablespoon of catnip in a bowl by itself will help them move their systems right along and bring you a happier and healthier kitty in the long-term.
Please don't get me wrong, I think all these cats are beautiful! Some of them have to be really uncomfortable handling all of that weight. They were designed to climb and run and jump, not lay around and eat all day and sleep. Tasha I wonder if since you got rid of all your cat's playfriends that he doesn't have much else to keep him active in the day time- six months ago thereabouts, you posted a picture of him and he was nice and slim?
Good luck to all of you. Obesity in cats brings on the same sort of problems as obesity in humans. It's easy to put it on and oh so hard to take it off.