Cool idea; the lady walking was pretty funny. I can't believe she walks in those boots all day long though - I wouldn't be able to do that.

Not sure if I could walk and work. She did say she was only working at about 70%.

Here's some other computer exercising options:

http://www.slipperybrick.com/2008/01/gamercize-pc-exercise/

This one looks like it's out of business? Good idea though:
http://www.slimgeek.com/index.html

http://www.videojug.com/film/how-to-do-basic-deskercise