American Idol (season 8) the American Idol." Season eight was the top show for the 2008–09 broadcast primetime season and took the top two spots for its Tuesday and Wednesday episodes. The viewers number for the Wednesday episodes averaged 25.527 million, while the Tuesday episodes averaged 24.741 million. The ratings were down from season seven, with the finale dropping 13% in the 18–49 demo and 9% in total viewers number. American Idol (season 8) The eighth season of "American Idol" premiered on January 13, 2009, and concluded on May 20, 2009. Judges Simon Cowell, Paula Abdul, and Randy Jackson continued to judge the show's
American Idol (season 9) the show as the new permanent fourth judge for the rounds held at CBS Television City for Hollywood Week and thereafter, onto the live shows. In addition, Simon Cowell announced shortly before the ninth season began that it would be his last season on "American Idol". Cowell left the show to begin preparations for an American version of his talent show "The X-Factor". Also, DeGeneres announced on July 29, 2010 that she would not return to the judging panel because it was not the right fit for her. DioGuardi would also not return as a judge for the tenth season