Amy Winehouse is one of those pop stars that comes along so rarely we're not sure we knew what we had when we had her. Her story speaks to us not because the relentless tabloid coverage of her darker days unfolded in real time, but because she tapped into deeply personal yet universal feelings and displayed them to us in all their painful, raw glory. She turned our demons into something we could dance and sing to, and she skewered those who wronged...