Kara DioGuardi had reservations about joining Simon Cowell, Paula Abdul and Randy Jackson as a judge on American Idol. After all, the singer/songwriter is used to working behind the scenes. "It's a whole new experience for me and one I am looking forward to," Kara says about starring on the hit reality show. But now she's thrilled to be a part of it. "Honestly, when Idol calls you, you feel like you've hit the lottery!"