According to IMDb Black Swan came out in 2010. EDIT: Actually for the UK it came out in 2011 so yay, it counts!

I'm not sure yet of my favs, as I haven't seen many from this year, but the below are gems.

Melancholia
Harry Potter and the Deathly Hallows Part 2
Thor
Black Swan

Also, I'm looking forward to the American version of The Girl with a Dragon Tattoo.