Here's what the judges had to say:
The Kinetic King - Physics performance artist
His complicated maze involving cups, popsicle sticks and strings goes off without a hitch, much to his elation. Piers Morgan calls it "another spectacular performance" and "explosive", admitting that while it was not as good as in the past, he is well liked by America and will go far.
Sharon Osbourne praises it as "sensational", saying that she loves the creativity behind the act. Howie Mandel agrees with Sharon but worries that it was too explosive as things were "flying all over the place". However, he thinks it was "exciting" and "amazing" and would love to see an hour-long performance from him.
Fatally Unique - Dance troupe
Sharon thinks that the high energy routine displayed the group's "breathtaking" speed and precision of movement and declares this the year of "mean" dancing. "Really, really well done!" she adds.
Howie calls them "phenomenal" dancers but admits that there are other groups who are just as good and questions whether they were unique enough to make it through. Piers loves their intensity and variety, calling it "very fresh" and praising the group's "determination".
Landon Swank - Illusionist
The trick utilises the judges to select a control unit via controls on the table, leaving one untouched. He then reveals that he is in one of the boxes and has tried to predict which box each judge will push and also that each box is rigged with explosives. The trick is successful and Landon then drops from the untouched box, earning him a standing ovation.
Howie is "wowed" and admits that he was concerned as the stunt was "so exciting and so scary". Piers agrees, calling him a dark horse in the competition as well as a "very good magician" who was able to superbly execute a performance which will earn him a place in the top ten. Sharon is "so nervous" but praises the entire presentation as "A plus" and "fantastic".
Gymkana - Gymnastics dance group
The high-flying tumbling act, which includes a ring of fire, gets an early "no" buzz from Piers and is seemingly cut short when one member almost catches himself on fire. Piers "feels for" them but says that it got "repetitive" and seemed more like a gym routine than anything made for the show.
Sharon compares them to "little lemmings" and says that she was looking for the "personality" in their performance, which she felt was lacking. Howie disagrees with both judges, taking into consideration that they are "vastly different" to what other groups offer.
Summerwind Skippers - Jump rope group
Piers buzzes "no" towards the end of the act, but Sharon thinks it's "so great" to see the progression that the group has made as performers and applauds the "fantastic" job they did. Howie thinks they're edgy and have attitude and apologises for Piers buzzing them off. Piers defends his actions, however, saying that the group is not a $1 million act and does not represent the "perfection" he is seeking.
Snap Boogie - Street dancer
The freestyle routine is praised as "great" by Howie, who admits that he was initially concerned but eventually impressed by his ability to continue to "be himself" under such pressure.
Piers didn't like it, however, saying that while he was initially one of the most exciting performers in the competition, his act tonight seemed "cheesy". Sharon also "wasn't crazy" about the background dancers, but thinks that he is "organically great" and edgy and loves that his personality always shines through.
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Anna Graceman - Singer
The 11-year-old performs a version of Mötley Crüe's 'Home Sweet Home', earning her a standing ovation from the judges and audience alike. Piers marvels at her "incredible voice" and "amazing talent", calling it the best performance of the night.
Sharon agrees, saying that Mötley Crüe will find the performance "absolutely amazing" and saying that her voice suits the song. Howie keeps it short and sweet, saying only: "Wow!"
Steven Retchless - Pole dancer
Piers buzzes "no" yet again, but Sharon praises a "walking" move that he does as sensational. She admits that she originally had hesitations about his bringing in two other dancers, but found it "amazing" in execution.
Piers explains the reason he buzzed no, saying that the act could never be a $1 million winner. Howie disagrees with Piers, saying that pole dancing does work but wonders whether or not he is good enough to go to Vegas.
Smage Bros. Riding Show - BMX daredevils
Piers thinks that the dangerous stunt was "unbelievable" and applauds them for trying unrehearsed tricks and putting on an "incredible" performance. Howie agrees, calling it "so exciting" and loving the scary aspects of it. Sharon loves that the whole family is part of the group and is impressed with what they are able to accomplish.
Professor Splash - High diver
The act sees him jumping from a high surface into a flaming pool, a trick which he pulls off successfully. Howie thinks that it was an amazing feat but admits that it wasn't as spectacular since the pool he jumped into was much bigger.
Piers thinks it was amazing to witness up close, but agrees with Howie that his "unique selling point" previously was that he landed in such a small amount of water. Sharon applauds it for being so "fantastic" and anxiety-inducing, saying that she was on the edge of her seat the entire time.
Landau Eugene Murphy, Jr - Singer
His performance of 'I've Got the World On a String' earns him a standing ovation, with Sharon calling it "just fantastic" and admitting that it makes her feel good to listen to his "velvet" voice. Howie encourages America to vote, saying that the performance guarantees that he is worthy to be in the top ten.
Piers thinks that it wasn't his best performance and his last appearance was better, as he seemed too nervous and stilted tonight.
Silhouettes - Shadow Dance Group
Howie calls them "phenomenal", saying that he is impressed with their ability to always come up with something new and unique. Piers thinks that it was good but not great, and that it should have been better to compete with some of the other acts in the competition.
Sharon says that their potential is "endless" and can always grow and change but agrees that it was not as good as it has been in previous rounds.
America's Got Talent continues on Wednesday at 9/8c on NBC.