Who predicted 'American Idol' would be in deep trouble without Simon Cowell at the helm? Me, you, everybody, that is until Steven Tyler stepped up to breathe new life into the decade-old series, thrilling just about everyone -- save for Miss Jennifer Lopez.

"This was meant to be Jennifer's big comeback," an insider complains to me. "The entire re-branding of the show was built around her, but now it's all about Steven 24/7."