Age: 50
Occupation: U.S. Senator from Massachusetts
Previous TIME 100 Appearances: 0
Brown's surprise election to the late Ted Kennedy's Senate seat broke the Democrats' supermajority, throwing a wrench in the Obama Administration's plans for heath care reform. But the truck-driving, centerfold-posing pol quickly turned around and backed a bipartisan jobs bill, suggesting that a guy who campaigned as the Republicans' 41st vote may not be a GOP darling for long.