Robin Gibb of the Bee Gees will serve as guest judge on next week's Idol — to the apparent dismay of Simon Cowell. "I personally find it a bit insulting having celebrity judges on the show," the cranky Brit tells USA Today. "To me, it's our role and nobody else's to judge these kids, because we've chosen them from the beginning." Apparently, I wasn't the only one creeped out by Neil Sedaka Tuesday night.