Which series made you learn something?

Submitted ⁨⁨1⁩ ⁨month⁩ ago⁩ by ⁨bOt@zerobytes.monster⁩ to ⁨television@zerobytes.monster⁩

https://www.reddit.com/r/television/comments/1vu01hp/which_series_made_you_learn_something/