Hint: As a frustrated and underfunded public school teacher in 2000, the charity superstar launched an outfit that has sponsored more than 200,000 classroom projects and raised nearly $100 million. He originally thought he'd be a cop (the New York police academy held a spot for him for years), but now he has a new goal -- making school budgets smarter by opening up his charity's wealth of data. Stephen Colbert (a board member) recently sang a rendition of Rebecca Black's "Friday" as part of a stunt to raise money for the cause.
