Bill Gray and Carla Hendra, Ogilvy North America

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What: Co-CEOs

Where: Ogilvy North America

Why: Under the leadership of Gray and Hendra, Ogilvy North America won new clients in 2007 including BT Global Services, D&B, Deloitte, Jackson National Life and Siemens Medical. The agency also launched successful integrated campaigns including "The Business of Innovation" for IBM, "The Human Network" for Cisco, and "Customer Service is Back in Shipping" for DHL.

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