Yeah, saw that one on /. Pretty cool if you're forced to run Windows at work, which a lot of people are.
You OSX folks who can't run gKrellm (actually, maybe you *can* run gKrellem if you install X, I dunno) might be interested in
iPulse , it's freeware and compresses a mulitidimesional picture of your system state into only a tiny bit or real estate on the screen.