And in terms of pointing people to YouTube videos here's one that *does* contain usfeul information, in a clear, concise manner. It shows yet another piece of evidence that humans and chimpanzees share a common ancestor....well, either that or the fact that there's an intelligent designer who's actively deceitful:

Human-Great Ape Common Ancestery

This one's only 4 1/2 minutes long and it's pretty well all relevant, so I don't feel the need to direct people to a particular segment of it! :-)