These are great. They make fun of those old educational videos--Watch a few of the others, I've just posted the best ones. "What ARE birds? We just don't know." Those are links down there...
Iron! (http://www.youtube.com/watch?v=wdZHnDDjf6w&feature=related)
Water! (http://www.youtube.com/watch?v=ROX8koDCmQQ&feature=related)
Sulphur! (http://www.youtube.com/watch?v=trwNEEfe0D8)