"I'm amazed at these reviews, we've just watched this movie and thought it was superb. It's VERY well directed, Ben Chaplin plays a great role (miscast... exactly how?), Friel is superb and Farrell plays his usual great part. My only complaint is Knightley as the "famous actress" as she obviously is in real life. Her performance is great but I would have preferred an unknown actress in this role as using someone already famous blurs the line between the movie and real life.
Rent / buy this, you won't regret it."