the christie's restaurant in houston, last survivor of a once-thriving chain, embodies everything that made the old s.a. location so popular: a clean, large, traditional dining room, with cloth table coverings, a menu full of long-time favorite dishes, and a swarm ofstaffkeeping each customer supplied with everything they expect in a good restaurant and each place unobtrusively cleared. it's nice, i think, that a restaurant doesn't cutstaffin order to save a few bucks. the quality of service is well worth the relatively slight premium in prices. we chose this place mostly from a sense of nostalgia, and were rewarded with a pleasant m