Julianne Moore plays people who are not particularly strong; the people face obstacles; the obstacles grow and grow. At some point, the facade crumbles; good manners are tossed aside; something feral pops up on screen. Here are a few of the electrifying moments. A woman snaps at her husband, who refuses to acknowledge that dementia is "knocking on the door" ("Still Alice"). A woman breaks down because her spouse is dying, and the illness makes her consider how deficient she herself has been ("Magnolia"). A near-catatonic housewife sobs on her toilet as she confronts the fact that she can't "wear a nice face" for her child's party ("The Hours"). You might not think of Sarah Palin in this category, since Palin rarely cries in public. But Julianne Moore spotted something in Palin that others had overlooked. The embarrassing moments--the Couric interview, the reference to "Senator O'Biden," the allusion to Elizabeth I...