Dim the lights and let the show begin. The cast of characters in this cozy nook of The Lancaster Hotel ranges from the elegant to the occasionally eccentric. The richly hued set reflects the intimate, refined taste of a real Broadway in the heart of the Theater District. While the city shells out millions in tax breaks for hotel and restaurant newcomers, Bistro Lancaster is the proud experienced veteran from the lean years of downtown. The always efficient waitstaff serves up simple but savory full-course meals and spectacular appetizers and drinks. Savvy patrons of the arts know that this spot, at the corner of Louisiana and Texas, has become as much a part of Houston's theater scene as any performance hall. Shows come and go -- the Lancaster's excellence proves it's here to stay.