On Monday’s episode, the judge, 64, pushed the coveted button for season 14 finalist V.Unbeatable after the dance troupe’s electrifying performance that was packed with aerial flips and choreography.

And Mandel may be V.Unbeatable’s biggest fan. The comedian tells PEOPLE he was elated to see the group from Mumbai, India, return forChampions.

“I wanted my heart to explode in a moment where I didn’t know what to expect or didn’t know how good it was going to be,” Mandel says of what made him emphatically push the metallic button with his backside. “You get this emotional tsunami and you want to do everything: scream, tap your foot and hit the Golden Buzzer.”

The star adds, “I think they’re the most electric, exciting, thrilling and passionate act I’ve ever seen in the history of any talent show. I’ve never seen anything like them in my life.”

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AMERICA’S GOT TALENT

New judge Alesha Dixon was equally impressed. “I can see on your faces just how much this means to all of you. Thank you so much for bringing such a beautiful, positive energy toAGT: Champions, that was absolutely outstanding,” she said.

Heidi Klum echoed similar sentiments, telling the young boys and girls, “I loved it, so much adrenaline. It was kind of like you’re a living kaleidoscope right in front of us.”

Cowell also gave V.Unbeatable high praise. “Every time you come out, you do something more creative, more interesting. I think this act is going to tour. I think this is going to live forever and I think this has probably been one of the best actChampionshas seen this year,” he said.

AMERICA’S GOT TALENT

This marks the second Golden Buzzer moment for V.Unbeatable. During their season, they were chosen as guest judgeDwyane Wade’s Golden Buzzer-winning act.

With V.Unbeatable advancing to the finals, the superfans voted forPoland’s Got Talentwinner and hand-balancing act Duo Destiny as well as violinist and season 14 finalistTyler Butler-Figueroa. The judges choseBritain’s Got Talent: The Championsfavorite andGermany’s Got Talentwinner Alexa Lauenburger as the last act of the night to move forward in the competition.

America’s Got Talent: The Championsairs Mondays (8 p.m. ET) on NBC.

source: people.com