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Controversial character: David Letterman
What he did: Late-night talk show host David Letterman announced he was the victim of a $2 million extortion plot threatening to reveal his sexual affairs with several female "Late Show" staffers.
What happened next: Officials charge CBS News producer Robert "Joe" Halderman with trying to blackmail Letterman for $2 million in the extortion case.
Residual effects: Letterman made an on-air apology and turned an unflattering sex scandal into a 22 percent ratings hike.