Dance troupe Innova Irish Dance Company proved there was local talent to be found as they wowed the panel by putting a surprising twist on their act.
Taking to the stage in traditional Irish dance costumes, the group - who hail from the north coast - impressed the judges with their unique combination of traditional Irish dancing to contemporary music.
"Its tradition with a twist and it completely and utterly worked, congratulations and well done," Amanda Holden told them.
"I love the outfits, I've actually got a dress like that at home," joked David Walliams, before adding: "I can't wait to see what you do next."
Simon Cowell was also visibly impressed, telling them: "I've got to tell you I absolutely loved that."
This is why I wanted to come to Belfast.
Simon Cowell to Innova Irish Dance Company
The group will now have to wait to find out if they have made it to live semi-finals, as will Tipperary man Oliver Moroney, 43, whose unique audition impressed some of the judges, but not all.
Walking on stage at The Waterfront Hall with a brush in hand, Simon wasn't sure whether it was an act or a member of the production crew making sure the area was up to standard.
After the confusion was settled Oliver then performed a traditional Sean Nós style dance, which involved Irish dancing whilst taking his clothes off to reveal a GAA kit and then using the brush to dance with.
David, Amanda and Alesha Dixon were entertained enough to say yes, but Simon was not so easily moved and told him no.
Other hopefuls at the Belfast auditions to hear the dreaded 'no' word included Gary James, from Holywood, Co Down, whose Del Boy impression failed to impress, the Rock and Roll Street Stars from west Cork and Dubliner John Power, whose transformation into 'Anger Man' left the judges wondering just what was going on.
Simon, Amanda and Alesha quickly pressed their buzzer, but a technical fault with David's red button meant John got more stage time than the audience would have liked.
Elsewhere, Simon got a blast from the past from 31-year-old Andrew Derbyshire, who first auditioned for the music mogul during the first series of Pop Idol.
You really did just own the whole stage and I'm so please for you because your personality is wonderful and your talent is fantastic.
Alesha Dixon to Andrew Derbyshire
Andrew performed a diva-like rendition of Jocelyn Brown's Somebody Else's Guy which had all four judges and the audience on their feet.
Simon said: "If you start to believe in yourself and trust what you've got you actually could do well on a show like this."
"You were singing for your life there, it was an extraordinary performance," added David.
Drama group Shakespeare Remix caused a surprising split among the panel following their audition, which saw its members Cordell, 48, Samantha, 37, and Shant'e, 22, perform their own interpretation of a scene from Hamlet.
Amanda, Alesha and David were not moved by their audition, with Amanda telling them: "If I'm really honest I don't think any of you can act."
But Simon, surprisingly, enjoyed their performance and said he would have voted 'yes' if the other judges had not already gave a resounding 'no'.
Meanwhile the last audition of the night had to be carried out without Simon present, as he was making a mad dash to New York to be at the birth of his son Eric.
Bailey McConnell, 14, performed his self-penned song Dying Hole for the remaining judges and earned a standing ovation and three 'yeses' for his efforts.
"It's times like this I wish I was Simon Cowell because if I had a record label I'd sign you," Alesha told him.
Britain's Got Talent returns to UTV next Saturday at 7pm.