“Hustle Down” (*1/2 out of four) was a numbingly ugly underworld melodrama about the driver (Tom Sizemore) for the Baja drug cartel who finds himself on the run for his life from a merciless assassin (Kevin Gage) when he mistakenly steals a car and cash that was meant for his boss (Raymond J. Barry); along the way he crosses paths with a sultry dancer (Bai Ling) who has much more invested in all this than he realizes. Good cast is wasted on a story with more double-crosses and backstabbings than you can count but it all counts for little since you don’t care about any of the characters (or much else). Film marks the reunion between Sizemore and Gage but let’s just be kind and say this doesn’t quite measure up to the artistry or adrenaline of their first collaboration “Heat.”