Another fantastic movie I just rented and am now planning to buy is The Cooler with William H. Macy, Alec Baldwin, and Maria Bello. Damn good movie about a Vegas "cooler" (Macy) and his relationship with his casino boss (Baldwin) and a waitress in the casino (Bello). Alec definitely deserved his Oscar nom for this one.
In case you're wondering, a "cooler" is someone who can turn a casino winner into a loser just by his very presence. He has such a negative vibe about him, that a hot table turns cool.