He is a talented screenwriter. I'm presently unable to listen to his commentary, but no doubt he makes some very valid points. That said, I have heard some of his comments in the past on other matters, and it seems to me as if he can be very closed-minded, such as to do with anything that can't be explained by conventional "mainstream" science (a very limiting thing). I get the impression he has made up his mind about many issues, and refuses to do the research which would inevitably lead him to think otherwise. I think he'd be better off sticking to acting and writing.