This is absolutely the best movie I've ever watched.
Spoilers below, so beware!
HERE BE SPOILERS:
The scene where Valjean dies is absolutely brilliant - I cried for like 10 minutes straight solely because of Hathaway and Jackman's acting. I don't remember it being like that in the play (though I may be misremembering), and the way they used a stunt double to cover for Jackman as he walked away from Valjean's corpse was absolutely great. I love the attention to detail; Javert helping a guy at the barricade, the letter to Cosette from Valjean that says "Cosette" in cursive, hell, I even liked the actors for the Thenadiers (who I absolutely despise as characters), and I love the fact that they're not made into slave traders in the movie. It makes that ending where they get punched by Marius and thrown out so much more satisfying.
Russel Crowe as Javert was a very solid choice. His singing isn't the best in some parts, but in others it's absolutely the best in my book, especially when Valjean frees him, and he sings
"Shoot me now, for all I care!
If you let me go, beware!
You will still answer to Javert!"
That sent chills down my spine.
His singing of Javert's Suicide was also pretty good, though I don't like how they skipped a pretty good portion of the song (going immediately from the fast beginning to "And my thoughts fly apart..." He brought a human side to Javert which I absolutely love - Javert's meant to be portrayed as a clinically depressed person putting on a mask, and I think that Russell Crowe played it perfectly.
The only actor I didn't really like was Eddie Redmayne as Marius. His singing's good enough, but his acting didn't really convince me as Marius and the only parts I really fell like he fit into the role was at the wedding and Valjean's confession.
The sewer scene wasn't terribly good. I'm not a fan of how Valjean and Marius got covered in muck, and throughout that whole scene I was thinking "how is Marius's wound not being infected by this?!" To add onto that, the beginning of Javert's Suicide was sung very badly by Jackman. Jackman's singing began to fall apart after the second act, though it recovered for a great climax with his last song.
Overall, it was a great movie (and my favorite of all time), but I feel like some parts could be improved and some lines weren't sung or acted properly. It earns a good 9/10 from me.