My personal favorite for flawed reasons is Madoka because I was there for the live reactions to the infamous episode and it was magical watching everyone lose their shit. It was also my re-introduction to anime after being shamed out of it for liking sailor moon as a kid.
Oh shit, you mean the “titan faces”? I’m only a couple episodes deep tbh
Edit: if you like that check out grand blue
grand blue
Will check out! And the journey gets far far far far far more hilarious from there. Also painful from the amount of second-hand embarrassment (if you are one for that)