The fifth season of American talent show competition series America's Got Talent was broadcast on NBC from June 1 to September 15, 2010. For this season, production staff introduced two new quarter-finals: one for Wildcards selected from the participants eliminated during auditions or their respective quarter-final, and one for acts that auditioned via YouTube, following changes in the online application process. Following the conclusion of the fourth season, David Hasselhoff left the program, and was replaced by Howie Mandel.