There's a nice, one page article in Bicycling Magazine about Caron Butler--Forward for the Dallas Mavericks. At 6'7" and 228 pounds (I wish I weighed 228 pounds at 5'11",) he's helping to make the world a better place.
Now, I'm not a basketball fan; in fact, I never heard of this guy until I read the article! But here's a man who was arrested 15 times for drug and weapons violations before he turned 15 years old giving back to the community.
He has underprivileged children take a "Peace Pledge" to swear you'll ride safely and be a pillar in your community. Then the do a ride with the Racine, WI police department.
I love reading stories like this. A person struggled in life, came back, and now is giving back! I think that's kind of what a lot of us are doing with our lives--with weight loss.