To Scott Sanford, senior client director at Davie Brown Talent, a top provider of celebrity talent and music licensing for companies and ad agencies, Stone's heavily reported gaffe is evidence of the risk that comes with signing celebrity endorsers.

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He sometimes urged a student to meet with the senior ethics officer at the Playhouse, a Scientologist who often recommended courses at the Celebrity Centre.

NEWYORKER: The Apostate

Enter web-comic celebrity Randall Munroe (of xkcd), and his friend Ellen, Senior Reactor Operator at the Reed Research Reactor, who have put together some charts which might help us make sense of all this radiation talk.

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He says a senior official of the Indian Cancer Society in Delhi had told him that "it's hard to believe no celebrity has ever had cancer" in a country where five million people have the disease.

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The decision not to address the celebrity that comes along with the show was a conscious one by the network, explains Liz Gateley, senior vice president of MTV series development and an executive producer on the show.

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