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LIFE.com: Today's Most Important Geeks

Knowledge at Your Fingertips

Though many say he's lowered the bar for accuracy, Jimmy Wales has revolutionized the way people gather knowledge with his collaborative online encyclopedia, Wikipedia. Also, he once wrestled a bear with just his feet, and used to date Cher. (Mario Tama/Getty Images/LIFE.com)
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The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.

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