Season 4: The one with sexual harassment
Two distinct scandals come to mind when we think of American Idol season four. They are the voting numbers mix-up and top 12 finalist Mario Vazquez quitting. Mario (a doppelganger for Corey Clark) was the first, and only, contestant ever to quit Idol, citing ''personal reasons," which later transpired to be accusations of sexually harassing an Idol employee.
Meanwhile, the show was to go on and, a week after Mario's au revoir, came the top 11 performance night for which Fox mislabeled some of the contestants' phone numbers. Angered audiences forced a re-vote the following night, but it still didn't help Mikalah Gordon who was sent on her merry way.