America's Got Talent

Season 4 Episode 22

Episode 422

Aired Tuesday 9:00 PM Sep 02, 2009 on NBC
Episode 422
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Episode Summary

Episode 22 of the fourth season of America's Got Talent aired on September 2, 2009 and featured the hosting efforts of David Hasselhoff, Sharon Osbourne and Piers Morgan, as well as Nick Cannon as host. This episode also featured the appearance of Kermit the Frog and Miss Piggy. In this episode four acts are chosen as the semi finalist for the season.moreless

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