My girlfriend somehow grew up completely unaware of Star Trek, so I introduced her to The Next Generation last year and we've been watching it (rewatching in my case, but for the first time in over two decades) one episode a day.
It's so relaxing, in a way that almost no modern TV is. No end-of-episode cliffhangers or other mechanisms trying to make you binge-watch. We can just watch one episode to unwind, discuss it a bit if it's one of the better thought-provoking ones, and then go to bed.