Why evolution is true (great science lecture)

Well I posted a video on astronomy/physics called A Universe From Nothing a few weeks back and it seemed to get a good response, so here is another great lecture on biology/evolution. Spreading knowledge rocks.

http://www.youtube.com/watch?v=w1m4mATYoig&fmt=18

This is great stuff for people who intuitively understand the principle of evolution, but have never really learned the details/proof behind it. This guy explains the six main types of evidence in less than an hour. Enjoy!