I'll start off with one I just watched.
No other reason than I still have it open on my browser, and it's good content and pretty well made. Not only about the black death (which I'm sure we're all familiar with), but the affect on the psychology on the inhabitants of the cities it affected. How it manifested their beliefs.
'The Black Death'
I watch (and always have) a lot of docos on all topics, particularly on anything space/history/geography/sociology/etc. etc.
Post up what you're watching.
All topics and content welcome.