Ali Wentworth

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After spending two months in a rehabilitation facility for treatment of sex addiction, actor David Duchovny has checked out of what his lawyer says was a successful treatment. David isn't the only one making headlines for sex addiction—a New York Daily News headline reads: "Sex addiction and its perils, from pop culture to Wall Street."

Ali says she has trouble understanding sex addiction. "I'm not addicted to it. I'm happier with a Klondike bar sometimes," she jokes.

Oprah says she believes sex addiction exists in the same way that food, drug, gambling and shopping addictions exist. "It's whenever it's controlling you and you're not in control," she says.