Pope Francis

The world's most famous Argentine export (sorry, Messi) has been shaking up the Vatican since 2013 as the first pope from the Americas and the first Jesuit to wear the big hat. At 88, Francis keeps a schedule that would exhaust men half his age—though his recent health scares and wheelchair appearances remind us that even those with a direct line to the Almighty aren't immortal. Between progressive pronouncements that make traditionalists clutch their rosaries and a refreshingly humble approach to the papacy, he's the most watchable pontiff in centuries.