For someone who mangled words on a regular basis, it's an impressive feat. Former U.S. President George W Bush's memoir has sold an astonishing two million copies since it was released in early November - and it's not even in paperback yet. 'Decision Points', published both in hardcover and e-book form, is flying off the shelves, the Crown Publishing Group says. By contrast, former president Bill Clinton's memoir, 'My Life', has logged sales of 2.2million copies since it was first published in 2004. A spokesman for Crown called the performance remarkable. He claimed he could not think of any other...