Having dinner at El Gaucho is a show unto itself—any restaurant that spins your salad at your table is theatrical in my book. But in the swank steakhouse’s downstairs lounge, the Pampas Room (note: not the “Pompous” Room), you get true dinner theater: filet mignon with a side of burlesque. For three more Saturdays, local singer Mark Siano (of Soft Rock KidMore...