The Rocko's Modern Life reboot special is a self-sustaining time loop, by being about all the complaints that online idiots would go on to make about the reboot special.
It's great. For the record, it doesn't require you to know or remember much of the original show (anything that is important gets explained in the special), but there's some fun extra references if you do.
Also, I've been watching Evangelion for essentially the first time, since I only saw it as a kid in weird disparate grabs on Adult Swim that I wasn't supposed to be watching. It's a really interesting watch, the show hasn't really been affected positively or negatively by cultural osmosis and references, although I think I really would've liked knowing beforehand just how much of it is holding on still, near-silent images. You can tell they were saving literally all of their budget, even from the word go, for the Eva scenes.