The fifth season of America's Got Talent, an American television reality show talent competition, premiered in the United States on the NBC network and on Canada's Global on June 1, 2010. Soul singer Michael Grimm was named the winner on September 15, 2010, beating 10-year-old classical crossover singer Jackie Evancho. Piers Morgan and Sharon Osbourne returned as judges. After four seasons on the show, David Hasselhoff left to host a new show and was replaced by Howie Mandel.

Answer this question: who won season 5 of america's got talent? Let's give stream of consciousness first:
The relevant information is: Soul singer Michael Grimm was named the winner on September 15, 2010, beating 10-year-old classical crossover singer Jackie Evancho.
So, the final answer is Soul singer Michael Grimm.