She is a one-name legend, a global icon, the ultimate diva. Yet most of what we know about Barbra Joan Streisand is the stuff of caricature: the Brooklyn girl made good, the ugly duckling who blossomed into a modern-day Nefertiti, the political dilettante driving to the barricades in her Rolls-Royce, the Oscar-winning actress and bona fide movie mogul, the greatest female singer who ever lived, a skinflint, a philanthropist, a connoisseur and a barbarian, the woman whose physical characteristics are instantly identifiable around the planet -- the tapered nails, those slightly crossed eyes, that nose, the voice.