I'm a little late in posting this, but here is the 2020 Fall Semester Dean's Lecture Series at St. John's College. There have been two lectures already, one on Hesiod and one on Montaigne. Hopefully the transcripts for these will be available soon at their archives site (link on the Lecture list page). Speaking of which, the archive site looks like it will be fun to explore.
Tomorrow's lecture for Constitution Day will be on the Grutter v. Bollinger case. The remaining lectures cover a wide variety of subjects, from pendulums to Aristotle's De Anima to photography. If you find something good in the archives, let me know!