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
Randy Jackson was later decided that he would remain as a judge for season 12. On May 9, 2013, Jackson announced that he would be leaving "American Idol" after twelve seasons due to him wanting to focus on other business ventures. On September 3, 2013, it was announced that Jackson would replace Jimmy Iovine as the in-house mentor on "American Idol". He departed the series for good in November 2014. Jackson produces "America's Best Dance Crew", an American group dance competition and reality television show, which premiered on February 7, 2008 on MTV and was cancelled in 2010 due to declining ratings.