The search for the ever-elusive fourth American Idol judge continues, and so does the search for those temporary stop-gap measures that will make us think there's nothing wrong going on, also known as guest judges. We've had Victoria Beckham and Mary J. Blige, and we still don't know when we'll have Katy Perry, but a couple more names have been tossed, in case you're a bit clueless about it. Suffice it to say one's denied it, and