Like many people, I only finally watched Avatar: The Last Airbender 12 years after it ended because it's conveniently on Netflix now. It was enjoyable.
I finally got around to experience the mindbreaking classic anime, Neon Genesis Evangelion
(1995-1996) thanks to Netflix. It deconstructs the mech genre. Very enjoyable. It's final two episodes are infamous because the studio pretty much ran out of money for the production and the last two episodes were low budget, intentionally over pretentious as a compromise.
A year after the last episode, the studio did a soft reboot on the final two episodes and produced Neon Genesis Evangelion: The End of Evangelion
(1997). Super ambitious and even a far more trippy, philosophical treaty with a much darker ending. At least the production values were 1000% better than the series final two episodes.
(Also featured on Netflix)
I watched the series in its original Japanese but Netflix did notably redo the English dub which wasn't reportedly terrible but could use improvement (which the new dub succeeded at).
Unlike the initial lament, Netflix is doing very good to great things with anime.