Like the title says.

I just rewatched the movie and it is a sucker punch.

From the amazingly disturbing opening credits (with a superb Immigrant Song cover), via a sickening rape scene with brutal revenge for Lisbeth all the way to that 3rd act which will definitely ruin Enya for a large group of viewers. The movie is just perfect.

The cast is brilliant and dedicated, the dialogue is just the bare essentials, no frills. The action is brutal and doesn't glorify itself.

Rooney Mara is amazing as Salander and she deserved a lot more recognition for it. (Obviously, if you've see the Swedish versions, it's hard to get past Noomi Rapace, who really delivered as well.)

I would've loved to have seen Fincher tackle the whole "father, half-brother" back story, the Blomqvist having to save Salander through journalism angle... We missed out on a lot.

The Girl in the Spider's Web was a disgrace of a movie. It just changed Salander's character into a female Jason Bourne/Jack Reacher, just out to save people.

Edit: nice to see that so many others liked this movie as much as I did. To all of you saying that the Swedish version was better: your opinion is valid, but I prefer the Fincher version, it's so much more atmospheric.