In Broadway's 'Wit,' A Documentary Of Our Demise
In her dressing room at the Friedman Theatre, Sex and the City star Cynthia Nixon has a nightly ritual: She rubs Nivea cream all over her scalp to soothe the razor burns. Being completely bald is just one of the many demands of the character she plays in Wit -- a brilliant college professor named Vivian Bearing, who's battling ovarian cancer. "She talks so much; she's verbose," Nixon says. "She talks in such an erudi…