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40. Iain Tait - Tie
Global digital creative director, Wieden & Kennedy
Age: 38
Rank change: New
Industry: Advertising

Tait joined the Portland, Ore., ad agency in April to revive its lagging digital business -- and made his mark by turning P&G's "Old Spice Guy" campaign into a viral sensation.



NEXT: 40. Aryeh Bourkoff - Tie
Last updated October 14 2010: 1:25 PM ET
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