So this is a new thing for me.
I listened to "The Silmarillion Seminar", a 35-part series of recorded lecture/podcasts analyzing The Silmarillion. (seminar location: the Tolkien Professor podcast stream)
I'm now watching a 13-part YouTube course (that is also a podcast, the youtube part is just powerpoint of selected quotations on the screen) analyzing Dune. (course location: Signum University YouTube channel, or Mythgard podcast stream)
(Both run by Corey Olsen, the "Tolkien Professor").
It's been really enjoyable. Kind of taken over my life - for some reason for the last 10 days or so I've felt happiest retreating from the real world...