Catherine O'Hara, who died January 30 in Los Angeles, will be remembered for her capacity to convey enormous feeling with the smallest movement of her face. She could slide from pleasant blankness to overwrought terror in an instant; she could wield immense power with a polite nod. With her frequent onscreen partner Eugene Levy, O'Hara morphed into a dozen different guises: She was the wide-eyed innocent in Waiting for Guffman, then weaponized that naivete into a steely competence in Best in Show. By A Mighty Wind, she was Levy's world-weary ex, like a frustrated and folksy Stevie Nicks to...
