Edit: I’m too tired to read properly, apparently. No, I have not tried working out every single sentence and typing it all out. But I’ll leave you with unrelated ramblings all the same.
I think it’s good with basically anything that takes your interest.
I sometimes re-watch, but mostly re-listen toアグレッシブ烈子 when doing stuff around the house. Pretty straight-forward language, and the episodes are short.
I also like to listen to 斉木楠雄のΨ難, or re-watch it with JP subs. It’s an anime, so it’s not like I’m looking for examples of realistic speaking patterns, but the dialogue makes for good listening practice because it is very rapid-fire.
KawaJappa CureDolly made an argument in one of her videos for rewatching and re-listening the same things again and again. I can see how some people would hate that, but I actually find it quite useful. It’s as though, as I get familiar with certain parts of the dialogue, my mind can move on and focus on other parts. Every run through, I recognise a word or grammar construct I hadn’t registered before, and go “ah, so that’s the kind of context it’s used in.” I find that harder to do when listening to something just once. Then I focus on getting the main gist of what’s being said, rather than the linguistic details.
But I do have a high tolerance for repetition of things I enjoy until I know every minute detail. Honestly, half of my English is from watching Star Wars episode IV and V about 7 million times as a child, until I could quote both of them from beginning to end.