Mo’nique
Mo'nique first rose to fame for the 2009 movie Precious. She played an abusive mother that was so convincing she even won multiple awards. People were amazed that such a new actress would have so much critical acclaim, but that all came crashing down when the fame seemingly got to her head. She was ultimately blacklisted...
Off-Screen Behavior
Her behavior off-screen was most troubling to producers and directors everywhere. Apparently, she was so difficult to work with during her 2010 campaign to help the film win an Oscar that she was blacklisted. Hollywood execs still hold onto that, and she's rarely gotten work since.