Some really bored person took the famous Steve Ballmer video (http://www.youtube.com/watch?v=wvsboPUjrGc&mode=related&search=) and made it into an iPod-style commercial. Check it out:
http://www.theregister.co.uk/2007/08/01/ballmer_dances/
Don't forget to check out the second video, too, which makes fun of this (http://www.youtube.com/watch?v=kvbWLfr-Z4s&mode=related&search=)