I am looking forward to seeing CLay Aiken's performance. It was during the second hour of the show, and I was intently watching LOST except at commercials, I'd flip over just to see who was on. I caught Dionne Warwick and Prince for a bit during those commercials.
I think it's telling that even these accomplished performers like Dionne Warwick, Mary J. Blige, and Al Jarreau had a hard time staying on pitch during their songs. (Blige was particularly off at the start, clearly a note under pitch.) True, the noise the fans were making was deafening, but it gives one pause to think how well most of the IDOL contestants stayed ON pitch this season.