And No Country for Old Men (I don't need to trade in my Cormac McCarthy fanboy card to say that, since The Road and Blood Meridian are much better books, and the film of No Country is a masterpiece).
And Winter's Bone.
No Country for Old Men and To Kill A Mockingbird are two very rare examples where the movie and the book are both masterpieces in their own right. But the book will always be at least slightly better, because it always looks cooler in my head than on a screen. This is a fact.