Tom Hagen was not a small role. However, one of his scenes that always sticks with me is when he's having dinner at Woltz's. Tom is completely disinterested in Woltz's words. They mean nothing to him. He continues to almost enthusiastically devour his meal while Woltz rants on.
That one stood out to me too. I noticed a slight smile on his face, he showed Woltz no respect at all, which I thought was out of character with the character he was portraying. Duvall is a great actor.
