I found an article about walking on a treadmill while working on the computer that I thought that all of you might find interesting. If you watch the videos on the right side you'll see that you can make your own. They show how people are able to work and exercise at the same time at a very low speed. It might be a good idea for those of us who are complaining about not getting enough exercise. I hope that you find it as interesting as I did. I think that I'm going to check into gettting a treadmill!
http://www.treadmill-desk.com/
http://www.airdesks.com/treadmill_laptop.asp