Celebrities are reacting to HBO's new documentary called "Leaving Neverland."
The documentary is about the men who claim Michael Jackson sexually abused them as children.
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Rosie O'Donnell" called it "haunting."
Judd Apatow said it would "take days to recover" from the documentary.
RELATED: Michael Jackson's brothers say HBO documentary 'Leaving Neverland' neglects facts
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Part one of "Leaving Neverland" aired Sunday night, and part two aired Monday night.
Jackson's estate has criticized it, calling it "character assassination," leading them to file a $100 million lawsuit.