Slideshow: Geeks in Toyland

Lego builds a global empire out of little plastic blocks, then conquers the wired world with Mindstorms. So when it's time to upgrade, the company turns to its obsessed fans. By Brendan I. Koerner. Wired
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extraordinaireRedmond, Washington

See related story: Geeks in Toyland

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Side by side comparison of the new Mindstorm bot versus the old one.
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Rex can walk, talk, see,

and hear.
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Ralph Hempel, firmware expert

Owens Sound, Ontario, Canada
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John Barnes, sensor sensei

Holland Patent, New York
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RoboArm, Alpha Rex, and

Spike.