Timberlake's "Priceless" evening brought in a crowd that spanned multiple generations. Sure, the performance was available only to MasterCard cardholders, and tickets were pretty pricey. But it wasn't just teenyboppers or people who liked The 20/20 Experience.

The crowd knew every word—teens, moms, grandmothers, and a hell of a lot of dads—sang and danced along at the sold-out venue.