Simon Cowell Wants Britney Spears to Guest on "American Idol"

American Idol judge Simon Cowell says he wants Britney Spears to appear on the show this season. "She would, literally, be first on the list as far as I'm concerned," Cowell said. "I would love to see her mentor the contestants, but if she doesn't want to do that, and she wants to come on the show and perform, I would welcome her anytime." Part of Cowell's Spears infatuation stems from the singer's appearance on his the U.K.'s own Idol, X Factor: "The buzz we had on our show when she came on was extraordinary. And even with all the stuff that's gone on with her the past two years, there was more excitement and interest in her than I've seen in anyone in years." Other stars Cowell would like to book as mentors include Beyoncé, Lionel Richie, Quentin Tarantino (who memorably served as a guest judge) and Paul McCartney, who the show has tried to recruit every season since its debut.

But should AI be less concerned about their mentors and more concerned about their Idols' success post-show? 2007 winner Jordin Sparks has parted ways with AI-owned 19 Management, Sparks' mother said in a MySpace post. Sparks' debut album had the worst first-week sales of any AI winner. Still, her exile demonstrates 19 Entertainment's impatience for developing new winners into viable chart stars once the former contestants experience weak sales. For a guide to the show's biggest winners and losers, check out our guide to the American Idol Rollercoaster here.

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