Peter Harter from In2Books pointed out this story in yesterday's New York Times Magazine: Domains: A Film Critic's Windy City Home -- an interview with Roger Ebert.
What's always with him: I wear a pedometer, a little device that counts every step. It works as a goad, because you walk additional distances to pile up the numbers. The average person walks 2,000 to 3,000 steps a day. I walk 10,000 steps a day. I have lost a lot of weight as a result.
good find Peter.