I saw this movie in the theater when it came out a few years ago. I got around to reading it, because it is part of the "1001 books you must read" list, but I wasn't sure how I would like it after already seeing the movie. 
 What I discovered is that the movie did a very thorough job of sticking very closely to the actual narrative. I was able to accurately recall scenes from the movie without much confusion though it had been a couple of years. 
 The one thing I was wondering about was the ending. The movie did a poor job with this compressing it into a very small amount of time. And honestly, this is the one thing I find aggravating with Ian McEwan - his willingness to simply jump to the future and jump to a first person perspective. I don't often find this to be earned. But, I also found that I really enjoyed the honesty and insights in this part of the book. A line that sticks out: "The addresses of the dead pile up." (Note: good band name - "The Addresses of the Dead") 
 In this book and in Saturday, I am struck by McEwan's insightful lines and honest view of human nature and of the human life. He can write some lines that make me draw a breath. But sometimes, his plot lines can be feel almost amateur. Sometimes. Over all, I really enjoyed the book.