Kavanagh also taped a segment on the topic for The Dr. Oz Show this week that is set to air Wednesday.

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Martin has just been named one of the Top 10 On-Line Influencers on Stress for Sharecare.com, an on-line portal founded by Dr. Oz and WebMD.

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Despite his vast following and torrents of media attention, Limbaugh, 59, gets trumped by an unlikely array of household names on our poll, including Dr. Mehmet Oz, Steven Spielberg and even U2 frontman and international do-gooder Bono (who also owns a stake in Forbes through Elevation Partners).

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The chances of your colonoscopy resulting in the made-for-TV near-death experience that Dr. Mehmet Oz detailed in a six-part video series on his show and website are highly unlikely.

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The 30-second announcement aired on shows that appeal to women, such as The View, Ellen and Dr. Oz, targeting female viewers around the same age as Greig, now 60, who might have seen Greig in a beauty salon.

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