Customer service reigns supreme at Stew Leonard's, a micro-chain of fresh-food stores within a stone's throw of New York City in suburban and exurban New York and Connecticut. Operating in a realm where the customer is right even when she's wrong, this third-generation family business has blossomed from a small dairy store founded in 1969 that carried just eight items and had seven employees into a four-store operation carrying 2,000 items with annual sales of $400 million, nearly 2,000 employees and a ten-year run on Fortune's "100 Best Companies to Work for in America," a who's who of employee-centric businesses. …