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Sinead O'Connor vs. Arsenio Hall Comedian Arsenio Hall,
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Sinead O'Connor vs. Arsenio Hall
Comedian Arsenio Hall, right, filed a $5 million libel lawsuit against singer Sinead O'Connor on May 5, 2016, after O'Connor posted a Facebook status accusing Hall of furnishing singer Prince with drugs. Prince died Thursday, April 21, 2016. (Credit: AP / Antonio Calanni, Richard Shotwell)

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Biggest celebrity feuds

Arsenio Hall vs. Sinead O'Connor, Hulk Hogan vs. Gawker Media, Kanye West vs. Amber Rose, the "Blurred Lines" copyright case and more: Reminding us that celebrities don't always play nicely.

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