The talent show's fourth season opens with preliminary auditions taped in theaters across the country. Nick Cannon is the new host, replacing Jerry Springer. David Hasselhoff, Sharon Osbourne and Piers Morgan return as the judges
The judges travel to Miami for the first time in AGT audition history, in hopes of finding the next million-dollar act
The coast-to-coast auditions continue as the judges search for the next million-dollar act
The judges continue their search for the next million dollar act
The judges continue their coast-to-coast search for the next big thing
The judges continue their coast-to-coast search for the next big thing
Auditions are now being held in New York City. Will the judges like what they see?
Performance showcases are featured in the eighth audition installment
Performance showcases are featured in the ninth audition installment
Performance showcases are featured in the 10th and final audition installment
In the first "Vegas Verdicts" edition, winning acts from the preliminary auditions advance to Las Vegas in the hope of securing a coveted position in the Top 40, with the judges debating their show-biz fate
In the second "Vegas Verdicts" installment, the judges debate the fates of the hopeful contestants to determine the Top 40 acts
Ten of the Top 40 acts showcase their talents in the first performance edition
The first five winning acts are selected for the Top 20 in a results edition. Mariah Carey performs, as does ventriloquist and Season 2 winner Terry Fator
Ten acts from the Top 40 take to the stage in the second performance installment
Five winning acts are selected to the coveted Top 20 in a results edition. Electro hip-hop duo LMFAO and comic illusionists Penn and Teller perform
The third performance episode showcases 10 acts from the Top 40
Five acts win a slot in the sought-after Top 20 in a results show. Daughtry and Ashley Tisdale perform
The Top 40 acts have been narrowed to 10 and are featured in the fourth performance show
Five final acts win a position in the Top 20 in a results show
The semifinals kick off with the first 10 acts from the Top 20 taking the stage
Four acts are selected to advance to the finals in a results edition. David Hasselhoff performs, as do the Muppets' Kermit the Frog and Miss Piggy
Ten semifinal acts from the Top 20 perform
A results edition reveals five winning acts. Members of the stage show "Jersey Boys"---a musical depicting the life of the pop group Frankie Valli and the Four Seasons---perform a medley of tunes from the show
The final performance episode features the 10 finalists in showcases
The winning act is revealed in the Season 4 finale. The victor scores $1 million. Performers include "Britain's Got Talent" phenom Susan Boyle; pop songstress Shakira; English singer Leona Lewis; country's Rascal Flatts; and Cirque du Soleil