Now market research analysts, whose firms get paid by the companies they study, say they are learning this lesson with EMC , the Hopkinton, Mass. data storage company led by Chief Joseph Tucci .

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For a lesson in marketing, religious leaders would do well to study the success of Bill Hybels and his Great Barrington, Ill.

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"It grabbed children's attention and this carried on beyond the 3D episode, it seemed to trigger an interest in learning that maintained through the rest of the lesson, " said Prof Anne Bamford, who led the study.

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Yet for a lesson in how to build truly massive riches, the current finalists should study the brief career of season-four winner Carrie Underwood.

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