a.k.a. one of the best ad campaigns ever!
I loved how Isaiah Mustafa responded to tweets and other comments online to make it a better viral marketing campaign but back on the topic of the original video, here's the making of video (which is really nifty to watch):
And the 15 second video that they refer to is:
You can find more of these excellent videos at: http://www.youtube.com/user/OldSpice along with the many response videos that were filmed.
A good viral video often gets parodies and well this library related New Spice video is just plain awesome in my opinion — It's clearly my favorite non-Old Spice video that has been made in this series!:
Well done marketing campaign, eh?