London - Two years ago, Britons were outraged when U.S. politicians like Sarah Palin, in the debate over healthcare reform, turned this country's National Health Service into a public whipping boy, denouncing it as "evil," "Orwellian" and generally the enemy of everything good and true. It's time for some payback. Britain is now embroiled in a healthcare argument of its own, prompted by a proposed shake-up of the NHS. And the phrase on everyone's lips is "American-style," which may not be as catchy as the "death panels" that Palin attributed to socialized medicine but which, over here, inspires