The Roseanne reboot catapulted Roseanne Barr from has-been to triumph this year, but it all came crashing down after the star posted a tweet comparing former top Obama advisor Valerie Jarrett to a character from Planet of the Apes.
It resulted in the cancellation of her top-rated show.
"I made a mistake," she told Fox News host Sean Hannity. "Obviously it cost me everything."
She wasn't the only star who had a year to forget. See who joins her in the hall of shame in the video above.