Newt and Callista Gingrich were spotted having a date night Friday, dining on the patio of Bistro Vivant in McLean. The former House speaker, wearing a dark suit with a dark blue tie, and his children's-book-authoring wife, wearing a black suit, ordered several appetizers including the olives provencal, the escargot and the beet salad. For their main course they split the whole Mediterranean branzino, telling servers at the end of the meal that they plan to be back.