Somehow Dee Lincoln exists in a city rife with staid steak houses straining for elegance, with smiling maître d's and hushed dining rooms. There's never a dull moment with her around. When she holds forth in "Havana Dee's," the piano bar at Del Frisco's Double Eagle Steakhouse in North Dallas, the mood shifts from upscale to frat-house blowout. In a good way. She may fling herself on the makeshift dance floor or encourage others to embarrass themselves. Her raucous laughter explodes across any room and never fails to lift a dour group. Good-natured teasing, cajoling, prodding, whatever; if it's necessary to stir up a group or create a party, Lincoln will try it and succeed. And all of this behavior occurs within close proximity to food and wine, refined service, evening dress and all the stylish elements of a Dallas steak house. Cool.