NBC's 'America's Got Talent' has announced the top acts of the current season. 48 acts will compete for the $1 million grand-prize beginning on Tuesday, June 29. 47 of those performers have been announced. The 48th, chosen by viewers of 'Today,' will be announced on June 30 during the 'America's Got Talent' results show. Among this season's top acts are performers from Illinois, Missouri and Iowa.