My list took a bit a a blow, but it makes more sense that many of mine would get knocked out in the 1st 100 than I would stay near the top of the pack with shows left in the 200. Comments with some @s because a couple of these I've recommended a lot. (my rank is listed)
NOVA - #11 Not many shows made great science stories so accessible. Such a quality show that I'd want access to on my island.
After Life #48-
@steelerfan1 and somebody else sang it's praises. In movies and shows I place a high value on things that can make me laugh and cry in one episode. I complain about Netflix a lot, but this and another show that I don't think we have seen are the 2 that I recommend to people a lot. Of course a bit might depend on how grating you find Gervais.
Dallas #33 - Just one that stood out from childhood that my parents weirdly let us stay up to watch.
The Real World #26 @guru_007 is underestimating the impact of this one. This was a core part of my college and MTV watching, which where I put 5 shows that were essential watches for me around then. This is also admitting that I haven't seen more than 1/2 the seasons. I was a little late to the OG, so I hopped on with LA and jumped off after New Orleans. Our favorite was probably London (Jacinda!) and of course SF with Pedro and Puck. Good memories here.
Bates Motel #49 I will echo fellow MADer
@simey here. This was one of my bigger surprises when I was heavier into TV in the 2010s. The leads of Fermiga and Highmore were great and they did a good job with the atmosphere and creep factor. A well done show that did the movie/book and characters justice. It also didn't overstay it's welcome at 5 seasons. Another I recommended a lot in the video store days.
Cobra Kai #42 I freakin' LOVED the first couple seasons. Yes, I get what some of you are saying that is was always a bit corny. But it was that in the way that the first movie was - it was corny, but also well made, funny, and I thought they hit a HR by flipping it a bit and having us have some sympathy for Johnny. Problem is that lasted about 3 seasons then the inevitable happened and they started to trot out the side characters and villains from the movies with diminishing returns. To me it got too much to keep watching. Even Kreese I found cringeworthy and that was pretty early in the seasons. I haven't bothered with S5+ yet.