Greenstein donates his profit from tournament winnings to charities, primarily Children, Incorporated, earning him the nickname "the Robin Hood of poker".
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He has also appeared in the first three seasons of the late night series Poker After Dark on NBC.
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Greenstein has appeared in each of the first three series of Poker Superstars Invitational Tournament and all seven seasons of the GSN series High Stakes Poker.
The game has been popular among poker players such as Daniel Negreanu, Jason Mercier, Barry Greenstein, Shaun Deeb, and others.
Barry Manilow | Barry Goldwater | Barry Bonds | Barry Gibb | Barry | Barry Levinson | Barry Humphries | Lynda Barry | Barry Lyndon | Barry McGee | Barry Greenstein | Barry County, Missouri | Dave Barry | Barry White | Barry Morse | Barry Mann | Barry Gifford | Barry County | Barry Commoner | Barry Sheene | Barry Lopez | Barry Diller | Barry Davies | Barry Bostwick | Barry Windsor-Smith | Barry Williams | Barry, Vale of Glamorgan | Barry Pepper | Barry Miles | Barry Hearn |
In January 2006, Juanda defeated a field including Jeff Lisandro, Mike Sexton, Barry Greenstein, Tony Bloom, Tony G and Phil Ivey to win the A$1,000,000 ($732,901) first prize in the Crown Australian Poker Championship A$100,000 speed poker event.
At the World Series of Poker he has had a 4th place finish in the 2001 $3,000 No Limit Hold-Em event (which also featured Johnny Chan and Kathy Liebert; and a 5th place finish in the 2005 $10,000 Pot Limit Omaha event (which also featured Todd Brunson, Barry Greenstein (who lost a critical pot to Simon, and then complained about it in his blog.), Erik Seidel and Julian "The Kid" Gardner.
The group of professionals, known as The Corporation, is made up of Ted Forrest, Jennifer Harman, Minh Ly, Doyle Brunson, Todd Brunson, Howard Lederer, David Grey, Chip Reese, Gus Hansen, Phil Ivey, Barry Greenstein, Lyle Berman and other assorted professionals.