"Everybody's got a sack of rocks," Elaine Stritch says, quoting her late husband, John Bay. Some people don't let you know it. Some people do. The 89-year-old Broadway, TV, movie and cabaret star never lets you forget it. Swinging her particular rock sack with as much panache as her body will allow, Stritch makes her life a perpetual 11 o'clock number, celebrating strength through adversity, self-inflicted or otherwise.