It's nice to see Gregory Peck in a slightly different sort of role for him. His character makes mistakes... and big ones. He's not the pillar of morality he's supposed to be as a police officer... and as Gregory Peck. Good God, he's human! Clever casting and an interesting film.
Wide screen cinematography to die for. Those fake-no depth of field shots(is there a name for them?). Gregory Peck and Tuesday weld deliver. And the story keeps you involved from the beginning to the final shot. I have to watch more Frankenheimer movies. It wouldn't be too much of a stretch to call I Walk the Line a masterpiece. It's definitely overlooked.