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Virginia Guynes
Demi Moore's mother, Virginia, proved that you don't need the consent—or love—of your famous offspring to exploit them. Guynes allegedly sold tabloids scurrilous information about her daughter, who eventually cut ties with her completely. Undeterred, Mom was able to leverage her notoriety into a nude photo shoot in High Society. (In homage to Demi's star turn in Ghost, she posed in front of a potter's wheel.) After their estrangement, Guynes continued to give interviews, saying Demi "should take better care" of her mother.

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The Lohans
In between calls to TMZ and tearful interviews with Extra, Michael Lohan—who was recently jailed for attempted assault—used Lindsay's fame to promote a short-lived Christian Candid Camera knockoff, which featured the born-again Mr. Lohan begging for money. When a passerby went for his wallet, Michael said, giggling, "I don't want your money! I'm Lindsay Lohan's father!" His leopard-printed ex-wife, Dina Lohan, recently signed with E! to appear in Living Lohan, which will follow her younger, flatter-chested daughter, Ali, as the spray-tanned 14-year-old desperately seeks attention in Las Vegas.