Aerosmith takes the 'Idol' stage

"I've been waiting for two years to say this," says Ryan Seacrest, as American Idol returns from commercial. "Ladies and gentlemen, Aerosmith!"

And the group, which looked for a while like it might break up over Steven Tyler's decision to judge on Idol, now takes the Idol stage to perform Legendary Child, their new song from the G.I. Joe: Retaliation soundtrack. It's built on a vintage...