This made the rounds a while ago (in some circles at least)....

But I am still highly impressed each time I see/hear it:

One of the Wikimedia Foundation's projects is Wikimedia Commons...

The site has a lot of cool media that can be used for various purposes. One nifty page linked from the site shows the latest files and updates in real time (http://toolserver.org/%7Epara/Commons:Special:NewFiles):