No. 1: Ben Kaufman

Age: 20

Location: Burlington, Vt.

2006 revenue: $1 million

Employees: 14

Year founded: 2005

Mophie makes cases, splitters, armbands and clips for iPods. The iPod accessory market may be crowded these days, but Kaufman's goal is to turn Mophie into a community-based product-development company that will solicit ideas for all kinds of new products -- not just iPod add-ons -- from a 50,000-member online user base. He's got $2 million in venture capital and a former top exec from Burton Snowboard on board to help him do it. Revenue is expected to hit $5 million this year.

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Source: Inc.com

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