Taken from here, but thought it was pretty cool and wanted to pass it on. I know it's probably not great for elementary education students, but as a college student who had to study a lot of this in my Biology classes, I rather enjoyed it.
This video, 3.5* til Infinity, was created by some Stanford students on their trip to the Galapagos Islands. While some people may not agree with everything in the video, it's still an excellent demonstration of using multimedia resources to demonstrate knowledge. If you do teach about Darwin in your classroom, this video is an engaging summary of his ideas. There are also some great images from the Galapagos Islands in the video.