He has an interesting analogy at the beginning about a man sleeping in a park and getting his face bitten off by an alligator versus a man with the axe. The result is the same, but people hate the man and not the crocodile because wWhat else is a crocodile going to do, coming upon you napping in the park" whereas a man is allegedly in control of his actions.
Another interesting assertion: "Most people imagine that a belief in free will is necessary for morality. . . . The difference between happiness and suffering exists without free will." Still, there are a lot of interesting implications for morality. At 46:00 he talks about how we can make reasonable distinctions between premeditated and impulsive crime given that free will doesn't exist. punishment, morality, etc.
"In specific cases we have already changed our view of evil. Whenever we see the cause of someone's behavior, when we see for instance that a murderer had a brain tumor . . . so as to explain his violent impulses, that person suddenly becomes a victim of biology. Our moral intuitions shift utterly. Now I'm arguing that a brain tumor is just a special case of physical events giving rise to thoughts and actions. If we fully understood the neurophysiology of any murderer's brain, it would be as exculpatory as finding a tumor in it. If we could see how the wrong genes were being relentlessly transcribed, if we could see how his early life experience had sculpted the micro structure in his brain in just such a way as to give rise to violent impulses, the whole conception of placing blame on him would erode."