He's good on cadences suspensions and secondary dominants but for me it's aimed very much at tweaking the interest of the non-musician. Don't get me wrong he provides a great service in this respect; it's good to get this kind of historical overview and to see how much the present is still in debt to the past but as a tutorial it's necessarily limited and skims over too much too quickly.
The best use of this documentary of course is to take each technical innovation in turn and go elsewhere for further explanation and examples for study.

As a UK resident he's well known to me as a writer of theme tunes for TV and has an engaging presence on screen. I take issue with his dismissal of modernism but accept this is largely a dispute with the extreme end of serialism in classical music. I think he's okay with it in the jazz world so he gets a thumbs up from me.

Thanks for posting.

Alan