I'm re-watching The Magicians with my wife, since she's never seen it. It's been long enough since I watched it last that I don't remember a lot of things that happened, so there's a lot of "I forgot got that!" moments for me, which is fun.
I rewatch it every few years, this time with the SO who finally caved and decided to watch it with me. Despite having seen the entire series half a dozen times I'm still finding things I never noticed before. And while it's always been rather timeless, a lot of its themes are so much more applicable now than ever before. Cannot recommend it highly enough.
Other recent rewatches shared with the SO and found to have stood the test of time: Gargoyles, Batman TAS, Brisco County Jr, Daredevil, Star Trek TNG.