That's pretty cool. I feel like I have heard of it before, but with my memory, you never know. :) I usually just keep time in my head, but that might be convenient.
Yes, WiiFat posted about it, but I can't pull it up right now. I can't see his pics, links, archives, etc on the computer I'm using. (http://www.wiifatmarathon.com/)
On my own computer now. Here's the link to his archive page it's on: http://www.wiifatmarathon.com/2009_05_01_archive.htmlJust scroll down a bit to Product Review: Pacetat.