Stavros Flatley have become the latest golden buzzer acts on Britain's Got Talent: The Champions.
The father and son duo previously appeared on the show on Britain's Got Talent in 2009.
Returning to the stage tonight, dad Demetrios 'Demi' and son Michalakis 'Lagi' Demetriou showcased more of their famous dance moves.
And it won them the golden buzzer from Simon Cowell.
He told the pair: "I will never forget that moment when you came out and the crowd went crazy."
Hitting the golden buzzer, Simon added: "I've wanted to say this to you for years, I've wanted to thank you for everything you've done and there's one way I can do this..."
Meanwhile, David Walliams praised: "This for me is what this show is all about, ordinary people getting up and having a go. You're ordinary people with a huge talent to entertain people."
Alesha Dixon added: "You may not have won Britain's Got Talent but you're one of Britain's Got Talent's most iconic acts. Funny, crying, everything!"
Amanda Holden commented: "Next to having my children, it was one of the most joyous moments of my life."
They reacted: "This is mad. I can't tell you how much you going mad for us makes us feel. This show is amazing. We've been all over the world. We've done things and been places we never thought we'd be and it's because of you guys."
You can watch Stavros Flatley's performance from Britain's Got Talent: The Champions above.
With Simon's golden buzzer, Stavros Flatley head straight through to the grand final at the end of the series.
In each heat of Britain's Got Talent: The Champions, two acts will make the final.
Alongside five golden buzzer acts chosen by the judges - Simon Cowell, Amanda Holden, Alesha Dixon and David Walliams - as well as hosts Ant and Dec, the arena audience will also vote through one act each week.
The first episode saw Ukrainian sand artist Kseniya Simonova win the Golden Buzzer from Amanda while American daredevil duo Bello and Annaliese Nock won the superfan vote.
Week two saw German dog act Alexa Lauenburger win Ant and Dec's golden buzzer and dancers MerseyGirls win the audience vote.
And last week it was salsa dancer Paddy & Nico (David's golden buzzer) and illusionist Darcy Oake (audience vote) who made it through.
Alongside Stavros Flatley', other acts taking part in this week's fourth heat were 2008 winner, dancer George Sampson, reigning BGT champion, singer Colin Thackeray, rollerskating duo Billy & Emily England and mini magician Issy Simpson.
International acts competing are mime act Tape Face from New Zealand, Australian singer Bonnie Anderson, American comedian Preacher Lawson and Mirror Family, a mirror and light dance act who first appeared on Czecho Slovakia's Got Talent.
Britain's Got Talent: The Champions airs Saturday nights on ITV.