Ray Winstone
Ray Winstone's performance was absolutely impeccable in this movie. I have NEVER seen an actor convey so much conflict and pain just in his facial expressions. His mantra 'I will civilize this land' becomes so wretched and sad by the end of the movie. It breaks my heart just to watch his performance because he seems so torn apart throughout the whole movie. I would say its a shame that he was overlooked for a supporting actor oscar, but that seems so cliche.
Its possible that this is all just subjective and that I am either reading WAY more into the performance than i should, or that I am simply hyperbolizing the work. But this performance really spoke to me.