Betcha you never thought of this: YouTube.com is not just for creatively (weird) individuals who upload little videos to this online video sharing site. Fortune 500s are starting to upload videos as part of experimental guerrilla marketing campaigns.
One of the funniest I've run across is IBM's three-part “Art of the Sale” spoofing the sales process for their mainframe computers.
More here on my blog (along with links to the videos):
http://www.blogwriteforceos.com/blogwrite/2006/11/hey_big_blue_ca.html