I got this one from Netflix, to watch with my son. It gives a good overview of human evolution, from about 3 million years ago, IIRC. Visually, I thought it was very good, and they give a lot of information, including some ideas about the environmental changes that contributed to the development of the modern human mind. Some of it, though, is highly speculative, but they make the mistake of never actually saying this, and instead present everything as fact. Somewhat annoying, and I found myself pausing the show occasionally to discuss with my son why I thought something they said was not necessarily true.
My other gripe is . . . how to phrase this . . . I thought they reverse-anthropormorphized at times. (If that makes any sense. :D). Meaning, they made too big of a deal about some of the ways in which these early humans were vastly different from other animals. The most glaring example was the claim that Homo ergaster was the first creature on the planet to ever be monogamous . . . um, probably not, since it’s well-known that several species of animals and birds practice monogamy.
So, there were some little factual things here and there that I could pick at, but on the whole, I thought it gave a nice over-view for my son, who is just beginning to study evolution and the ancestry of the human race. He really enjoyed it, too, and has watched it twice so far. He’ll probably watch it a third time before we return it.