Swimming, motorcycling, basketball, tennis, sex; it's all available in Sun City, Arizona: as long as you're old enough! A chorus line of show-girls from 60-81 dances for retired judges and ex-industrial tycoons. Hell's Angels on a pension thunder past silverhaired policemen. Join in the laughter, the banter and the sheer zest for living as people deemed too old to work enthuse about running their very own city. Then wonder at the profligacy of a society that too often throws such a national resource on the scrap-heap.