Watch it again, it's brilliant. I genuinely feel pity every time I see the penguins carrying the deceased Oswald Cobblepot out into the water. And I also believe that Burton's re-imagining of the Penguin's origins works a lot better than in the comics. Who here has read a good Penguin story in the last two decades? I've read a lot of good graphic novels with the Penguin in them (Long Halloween, Dark Victory), but none where he successfully carries as much of the story as he did in Returns. I think it was the best DeVito performance I've seen, and certainly Michelle Pfeiffer was a brilliant Catwoman.
Returns is so rich with imagery and thematic material and I find it to be a very moving film, overall.