Read the books, saw the movie. Excellent adaptation of the story onto the big screen. Tons of detail in the books that didn't make the movie as per usual with adaptations, but nothing that would make you feel you missed the 'in joke' as mentioned before.
I met up with a friend who is a movie aficionado who had never read the books. He says that it was a fantastic movie on it's own which he enjoyed very much.
Anyway, loved the book, have nothing bad to say about the movie. Cried like a baby when Rue died. I'll probably blubber myself a river at the end of the 3rd movie....