What TV shows are absolutely worth watching?

I haven’t been watching much in terms of actual shows for a good while, then while listening to a podcast a host casually mentioned they had rewatched Chernobyl, how it still holds up, that there’s a reason it got as much acclaim as it did, etc. So I thought I’d give it a go and wow, loved it (still one episode left to watch).

Had me thinking, what else have I missed out on? What are some “absolute cinema” TV shows that still hold up and and are considered must watch?