What are the best documentaries on YouTube?

Glenn Gould - Off the Record and Glenn Gould - On the Record Gould in New York and at home, absorbing

The Lords' Tale follows the hereditary peers being evicted in 1999

Journeys with George film-maker follows George W Bush on the election trail

Londoner's | Pub Talk 1972 short film, Bermondsey residents talking and singing in pubs

A Lover's Quarell with the World Robert Frost as an old man, entertaining

The Aristocracy - Never the Same Again Worth watching the first five minutes for the two old Hons driving at a hunt

I have watched many of these several times.