Maybe you caught Matt Harding doing his little dance all over the world when his video went viral a few years ago. Here's his most recent version from 2008. I first saw it at Macworld, when NY Times columnist and general media guy David Pogue interviewed him as part of his featured presentation. Matt's a PC user, by the way!
Anyway, this video is really great if you haven't seen it. I think worth the time downloading the high quality version...
http://www.wherethehellismatt.com