Dannii Minogue, Kyle Sandilands and Brian McFadden, who make up the panel on the reality TV series, said that they are impressed by aspiring entertainers every year.
Last year's Australia's Got Talent was won by 14-year-old singer Jack Vidgen. In 2010, dance troupe Justice Crew took the crown, while opera singer Mark Vincent won in the show's first year. All three judges admitted that they are surprised that the talent keeps on coming.
Minogue told TV Tonight: "Just when we think we've seen it all, something or someone comes out of nowhere and does a truly amazing performance. A star walks on the stage and wows us.
"When the whole audience just floats to their feet after a performance and the rest of the stage seems to melt away, you know you have just witnessed the birth of a star."
Sandilands added: "The talent is, as always, diverse. What's different this year is that some of the acts we have previously said no to are back after going away and re-working their performance.
"Of course some are still terrible - which, of course a part of me loves - but some have taken our comments on board and have worked harder to transform their idea and [them]selves into a proper act. I think the people at home will be blown away by the weird things that Australians can do!"
McFadden said that he believes "that this year is the best talent we have ever had".
He added: "We've got everything from amazing guitarists, world-class bands, phenomenal dance troupes and acrobatics - and just to keep us on track, some jelly wrestling midgets who take Kyle on for good measure!"
Australia's Got Talent premieres on Monday, April 16 at 7.30pm on the Seven Network.
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