But interestingly enough, I think this was an adept translation by Jackson of Tolkien's vision. Boromir does speak up too soon, too often, and with too much self-importance. Are you still without your books? - tell me if you want quotes, but I think Tolkien was definately telling us not to like Boromir very much from the start.
You mean this look?
Hehehe...
I love all of that non-verbal stuff in the council in the movie too--everyone did a fabulous job of carrying on an unspoken conversation throughout the scene....