Most productions of Hair just don't get Sheila, the anti-war agitator with the vulnerable heart. They make her a caricature, or some sort of hippie-ish but tight-assed, lean-in corporate boss. But director Nick Sugar cast the perfect actress in the role in his Town Hall Arts Center production: Norrell Moore, red-haired, strong-featured, down-to-earth and passionate. You could easily imagine this woman inspiring a crowd into action or leading a march. It didn't hurt that she has a terrific voice and got to shine in two of the show's most memorable songs: "Easy to Be Hard" and "Good Morning Starshine."