No. 20: Seth Berkowitz

Age: 26

Location: New York

2006 revenue: undisclosed

Employees: 10 in the corporate office, 100 nationwide

Year founded: 2003

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.

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Source: Inc.com

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