V.S. Naipaul, noted author.
Dr. Richard Jarecki. He was most famous for hacking roulette:
He and his wife honed his technique at dozens of casinos, including in Monte Carlo; Divonne-les-Bains, France; Baden-Baden, Germany; San Remo, on the Italian Riviera; and, briefly, Las Vegas. He became a regular in San Remo, where he had lucrative runs over several years.
By 1969 he had become “a menace to every casino in Europe,” Robert Lardera, the San Remo casino’s managing director, told The Morning Herald.
“I don’t know how he does it exactly, but if he never returned to my casino I would be a very happy man,” Mr. Lardera said.
According to the NYT, his technique basically amounted to painstaking long term observation of thousands of spins, looking for roulette wheels with biases, and then exploiting those biases.