I enjoyed it. I had heard/read mainly negative reviews for it. So I was worried I'd be sitting there for a 165 minutes of crap. But I was entertained throughout it.
I like Pitt, but in my opinion, he shouldn't really play a character that isn't "modern".
Eric Bana definitely steals the show though. O'Toole is good as well, and as usual, Brian Cox is the man.
I say
but if you are on the fence about it, at least check out a matinee.