<P> Cowell is the executive producer of America's Got Talent, which debuted in June 2006, along with Fremantle producers of the Idol series, but for some time he did not appear on the show due to the terms of his contract with Fox . The show was a huge success for NBC, drawing around 12 million viewers a week, and beating So You Think You Can Dance on Fox (produced by rival and Idol creator Simon Fuller). </P> <P> Britain's Got Talent debuted on ITV in June 2007 . Cowell appeared as a judge alongside Amanda Holden and Piers Morgan . The show was a ratings success and second and third seasons followed in 2008 and 2009 . The third series featured a publicity coup when Susan Boyle made a global media impact comparable to that of any previous talent show series winner with her regional audition performance . </P> <P> In 2015, Cowell launched La Banda, his first US show since his stint with X Factor USA . The show, designed to find male singers to form the "ultimate Latino Boy Band," launched on Univision in the US on 13 September 2015 . Cowell was announced as the replacement for Howard Stern on America's Got Talent on 22 October 2015 . </P> <P> On 16 March 2006, American Inventor debuted on ABC . Cowell co-produced the show with Peter Jones who had devised the concept . Fledgling entrepreneurs from across the United States competed to see who could come up with the best new product concept . The 2006 winner, Janusz Liberkowski, received $1 million and the opportunity to develop his idea into a business . The show returned one more time in 2007 for a second season . </P>

When did simon join america's got talent
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