James Bond movies can be grouped both by actor and by tone. The most recent batch, the Daniel Craig Bond flicks, reflect Hollywood’s current love affair with the gritty and the flawed. “Skyfall,” the latest of these, gives us a Bond who can barely pass his field agent proficiency tests, whose hands shake when he fires a gun, who’s only comfortable and at home when he’s both in impossible circumstances and full of a determination fueled by righteous anger.