Planet Earth & Planet Earth 2, Oceans, Life, The Blue Planet, Frozen Planet. I like nature shows the most, particularly the ones dealing with marine life.
Adam Ruins Everything is pretty good imo, if you havent watched it you should sit down for a few episodes, theyre kind of funny yet they have a lot of neat facts in them.
We also watched Making a Murderer in my Law class but I don't think that really counts as educational. I guess you could say it does.
Anything about mafia + mob bosses too, I love watching documentaries on those guys.
BILL NYE WAS THE BOMB AS A KID. I remember looking forward to science classes just because I loved singing along to the introduction song. I also really liked the Magic School Bus. I'm pretty sure that's where I got the majority of my jokes now. ; u ;