She can be funny and sharp-tongued, warm and blunt, empathic and demanding. Who is the woman Barack Obama calls "the boss"? In "Michelle, Washington Post" writer Liza Mundy paints a revealing and intimate portrait, taking us inside the marriage of the most dynamic couple in politics today. She shows how well they complement each other: Michelle, the highly organized, sometimes intimidating, list-making pragmatist; Barack, the introspective political charmer who won't pick up his socks but shoots for the sta