Theatre producer Cameron Mackintosh is in desperate need of a hit (he hasn’t had one since “Miss Saigon”). Now the reviews are in on “Witches of Eastwick” which opened in London this week. “Judging from the reviews and the reaction to the show from the theater elite here this week, Mackintosh seems to have hit a double. And with his unrivaled talent for marketing and publicity, he just may be able to steal his way to third, theater people here say. – New York Post