At the beginning of the year I started running. I just completed a Couch To 5K program
http://www.coolrunning.com/engine/2/2_3/181.shtml, I'm signed up for a 5K race, and I'm running three times every week (this week I'll be lucky to get two runs in). I'm not fast and I can't yet run continuously more than about three miles, but I don't have to outrun the bear, I just have to run faster than YOU.
I read your link and it sounded pretty cool. Keept it up! You won't regret it. I won't be able to run for a while (bad knees, too much weight) but the philosophy carries over in other workout programs. Right now, I'm beginning a weightlifting program with exercise bike/walking for the cardio.
For everyone: Please don't wait until your 40's to start back up. I wish I had been this motivated when I was 10 years younger.