The first of four semifinal rounds is featured. Two acts will move on to the finals---one chosen by celebrity judges David Hasselhoff, Brandy and Piers Morgan; the other by viewers. Regis Philbin hosts.

Two more finalist spots are up for grabs as performers compete in the third of four semifinal rounds. Brandy, David Hasselhoff and Piers Morgan are the judges. Regis Philbin hosts.

The fourth and final semifinal round. David Hasselhoff, Brandy and Piers Morgan serve as judges. Regis Philbin hosts.

A wild-card competition features 10 deserving but overlooked acts from the semifinals competing for two additional spots in next week's $1 million finale. Among the performers getting a second chance are: Nathan Burton; Leonid the Magnificent; All That; Natasha Le; Corina Brouder; Jessica Sanchez; Bobby Badfingers; N'Versity; Quick Change; and Alexis Jordan. Regis Philbin hosts.

Season 1 of the talent show concludes with host Regis Philbin announcing which one of the 10 finalists viewers chose to win the $1 million prize. Judges Piers Morgan, Brandy and David Hasselhoff offer their opinions on the top act. Blue Man Group and singing duo Aly and AJ perform.

The winning act is revealed in the Season 5 finale, which features performances by an array of Las Vegas and Hollywood stars.

AGT visits New York City in search of incredible talent!

Las Vegas Week - Day 1 The Vegas auditions begin as contestants compete to go to Hollywood!

Months of work come down to this final night, the top four perform to determine who will be the winner of Season 6 of America's Got Talent. Silhouttes, Poplyfe, Team iLuminate and Landau Eugene Murphy, Jr. compete for the last time.

Acts compete for a position in the Top 48. From Las Vegas.

The top 6 acts perform for the judges.

Twelve acts perform for the judges in hope of advancing to the next round and getting one step closer to the $1 million prize.

With only 24 acts left, competition for the million-dollar prize heats up.

The last 12 semifinalists compete for the million-dollar prize.

Six acts advance to the next level.

The final six acts are revealed.

The final six acts perform one final time.

In a live, star-studded season finale, the Top 6 learn who is the winner of the million-dollar prize and a headlining act in Las Vegas.

Five acts advance to the finals, rounding out the top 10; Little Mix performs; acrobatic gymnasts AcroArmy perform.

The contestants from the top 10 acts compete for the last time, and hope to win the competition and the $1 million prize; a special performance from Flo Rida and The Rockettes.

Exciting surprises and highlights of the final performances; the Season 10 winner is revealed; performances by special guests include Rachel Platten, Penn & Teller, Yolanda Adams and the Harlem Gospel Choir, Terry Fator, Freelusion and Mat Franco.

Before the Live Shows begin, relive the best moments from the season so far, including the Judges Golden Buzzer saves.

Auditions continue as contestants of all ages and variety acts of all types audition for the chance to win the $1 million prize; the Golden Buzzer is back, but there are only four chances left for acts to proceed directly to the Los Angeles Live Shows.

Auditions continue as variety acts of all types and contestants of all ages audition for the chance to win the $1 million prize; the Golden Buzzer is still in play, and three more lucky acts have the chance to go directly to the Live Shows.

Auditions continue as variety acts of all types and contestants of all ages audition for the chance to win the $1 million prize; the Golden Buzzer is still in play for two more lucky acts to go directly to the Live Shows in Los Angeles.