This is long, but interesting. It's a history of the evolution of humans, focusing primarily on our eating habits. It talks about how we changed our behavior when hunting became a biological necessity, and how that mindset is still apparent in modern life. And 2/3 of the way in the guy totally rips on sports hunting, which I think's great.
The coolest bit, anyways, is about halfway in. He's talking about the fossil record gap between 7 and 4 million year ago, and he suggests that ancestral man may've not gone straight from the jungles to the savannah, but rather from the jungles to the water's edge. He lays out a bunch of interesting behavioral and physiological developments in humans that are far removed from chimps and apes and why those developments are easily explained if mankind became aquatic for about three million years. Like our protruding noses, and our superthin body hair and the grain of that hair, and the webbing between our fingers and toes that other apes don't have, and all the intricate things our bodies do when we dive under water that other apes' bodies don't do. And human infants can hold their breath and swim and there seems to be no real reason for that, since it doesn't happen anywhere else in the ape kingdom. Apparently. Maybe the whole video was a satire. But it's cool anyways. Give it a watch.