A near riot broke out in Harrison, NJ, when HBO cut short a cattle call for its organized-crime drama, The Sopranos, when the crowd swelled to more than 14,000 — doubling the town's population. Aspiring mobsters, many wearing suits and skintight T-shirts, responded to a casting notice put out by producers looking for Italian-American-looking men and women to appear on the hit show, nominated last week for 18 Emmys.