Barry Greenstein, known as "The Robin Hood of Poker", is one of the most underrated players out there today. He donates 100% of his tournament earnings to charity, primarily Children Incorporated, an organization that sponsors some 15,000 kids in 21 countries. Born and raised in Chicago, he has a PhD in mathematics and now lives in California. Greenstein, a former Symantec software, seems like a very low-key, shy person but he isn't shy about busting out other players. On one episode ...