'America's Got Talent' finale gets most viewers in five years

The NBC hit series finale pulled in 14.4 million viewers, an increase of 33 percent from last year's final show. The finale grew 40 percent week to week.

The series, co-created by Simon Cowell, has already been renewed for next year with its four judges -- Howie Mandel, Mel B, Heidi Klum and Cowell -- returning as well.