"My dream was to dance in the chorus of a Broadway show, " he said.

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"Ultimately, my dream is to make a dance fitness DVD, because the obese public can relate to me, " he said.

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But "Rize" -- the title derives from the "rise up" phrase in Martin Luther King's "I have a dream" speech -- goes back to the phenomenon's roots, and shows what drives the dancers to dance as they do.

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