#20 SETH BERKOWITZ
Location: New York
2006 Revenue: undisclosed
Employees: 10 in the corporate office, 100 nationwide
Year founded: 2003
Seth Berkowitz started baking cookies for friends out of his University of Pennsylvania dorm room, and soon realized there was money to be made running late-night deliveries. From a one-man operation, the company has grown to seven locations, with eight more opening this year. College students (and now residents of New York's Greenwich Village) can place orders online and get fresh-baked cookies delivered to their doorsteps in about 30 minutes.