Ed Koch is having surgery today at Columbia-Presbyterian to replace a heart valve. Dr. Craig Smith, the same top doc who handled Bill Clinton's bypass a few years ago, will be performing the honors. (Smith is also NYC's hunkiest cardiac surgeon, a fact that probably didn't escape Koch's attention.) And while a valve replacement is a pretty uncomplicated procedure, the 84-year-old ex-mayor appears to be prepared for all the eventualities: "God will take me if he needs legal or political advice," he quipped to a reporter. [NY1, NYP]

Considered one of the city's best heart surgeons, Smith heads up the cardiothoracic surgery department at New York-Presbyterian. His most famous patient? That would be Bill Clinton.