Just caught this on the tube today. Owning Mahowny, starring Philip Seymour Hoffman and Minnie Driver. It tells the true story of a Canadian banker, Brian Molony, who embezzles 10.2 million dollars to fuel his gambling addiction in Atlantic City.
New Jersey Gaming fined Caesar's a day's closure (day after Thanksgiving) for their part (not checking the source of his gambling funds).
Although lacking the glitz and glamour of a movie like "21", the story is fairly true and shows the degeneration of someone who seemed fairly normal, had a good career, a girlfriend, and the normal amenities of life. He would gamble with millions but lived in a cheap apartment driving an old car.