New York’s Radio City Christmas Spectacular has a new choreographer this year: Linda Haberman, the first woman to hold the job in the history of the long-running holiday show. “Her plan — a noble one to those who revere the dying art of precision dance — is to save the Rockettes from mediocrity… Ms. Haberman is creating choreography for them that is both deceivingly difficult and wholly glamorous. Yes, the eye-high kicks are still around, but she is actually giving the Rockettes something sophisticated to dance. And it’s clear that they worship at her finely arched feet.”