On our cultural radar screen, politics and celebrity are quickly merging (have merged?) into a single blip. Although this is the definitively postmodern development, it"s not without precedent, and perhaps the granddaddy of it all is the subject of this engrossing book: Walter Winchell. By catching the rising star of radio Winchell was able to transform himself from poor boy to media superstar--and he was just as big as the politicians and movie stars he covered. When Winchell broadcast an unbecoming story about an actress, her career was in trouble; when he championed the cause of Joe McCarthy, the country was in trouble.