Dan Harrington is a professional poker player. Harrington chose his own nickname "Action Dan" even though he is known for being a tight conservative player.

Harrington is a former champion backgammon player, U.S. chess master, and bankruptcy lawyer. He also played poker against Bill Gates while Gates was at Harvard. Some of his earlier poker experience came from the Mayfair Club in the mid-1980s where he played with Howard Lederer, Steve Zolotow, and Erik Seidel.

Unlike many professional poker players, Dan considers himself only a part-time player, since he spends a large amount of his time on his business interests. He usually only plays a few events at the World Series of Poker each year and plays in occasional World Poker Tour events and a few other tournaments.

Harrington first cashed in the World Series of Poker in 1986. The next year, in only his second WSOP cash, Harrington made the final table of the Main Event. He finished in 6th place in the event which was won by Johnny Chan.

Sporting his iconic green Boston Red Sox cap, Dan Harrington is known as a crafty, tight-aggressive player, employing starting hand standards that are stricter than most professionals. When he reached the final table at the 1995 main event, he set the runner-up, Howard Goldfarb, to bluff for all his chips in the final hand.

His solid play allows him to make it to many final tables at large events. He won the World Series of Poker (WSOP) main event in 1995 for $1,000,000. He has made three other main event final tables: placing 6th in 1987 for $43,750, 3rd (out of 839 players) in 2003 for $650,000, and 4th (out of 2,576 players) in 2004 for $1,500,000. Because of the increased number of participants, his run of back-to-back main event final tables in 2003-04 has been called the greatest accomplishment in World Series history, particularly by ESPN poker announcer Norman Chad. As defending champion in 1996, Harrington made another deep run in the main event, finishing in 17th place and earning $23,400. He also cashed in the 2009 main event, finishing in 252nd place for a $32,963 payout.

In 2008, Harrington made his first appearance on the NBC show Poker After Dark in the episode titled "Mayfair Club." This tournament brought together poker players who had played at the legendary Mayfair Club in New York City. Harrington busted out first, finishing in 6th place.

With thanks to Wikipedia