Avengers: Endgame
This cinematic event (is what it is, this is not just a movie) had it's flaws, yes. It had quite a few flaws, even. But in the broad sense, I didn't really care about it all. The way it all tied together at the end, and the story arc as a whole made me feel all of the emotions. I'm going to flag this review for spoilers, even though I haven't really said anything, because I think it's great going in to this not knowing anything.
Thanks for ten great years, Marvel. You really nailed the landing.