Ruff Diamond and Gymtasia Evolution have become the last two acts to secure places in the grand final of Got To Dance 2013.
The pair triumphed over four other hopefuls in a closely-fought battle that was described by judge Ashley Banjo as the best semi-final the talent contest has ever had.
Six-strong street crew Ruff Diamond - who had auditioned for last year's series but failed to make the live shows - wowed the panel, with the Diversity frontman stating: "You guys just smashed your own bar.
"There was some nervous energy tonight and a couple of slips, but you guys are up there with the best ever."
"That performance was relentless," added Kimberly Wyatt. "You are the tightest crew we have had."
Scottish outfit Gymtasia fared worse, and are the only act to make the final whose semi-final performance recieved any red stars.
"You create impactful moments that I love, but I do have to say the choreography does need a bit of work, you need to really push yourselves so it becomes the same level as your gymnastics," commented Kimberly.
"Your talent as acrobats is unbelievable, but as dancers I don't feel you're worthy of a quarter of a million pounds," added Ashley.
Aston Merrygold, however, championed them and awarded them their one gold. "During your performance I just went, I'm gonna sit back and enjoy this. That was a spectacle on that stage tonight."
Elsewhere, Ashley praised Leon and Dotty for their innovative salsa routine, while Shun's unique style was met with a standing ovation from the studio audience.
"It's very rare that someone comes on the Got To Dance stage and invents their own dance," responded Aston. "The moves that you're pulling out are hard enough in real time, but when you're doing them in slow motion that seems next to impossible."
Ruff Diamond and Gymtasia join Lukas McFarlane, Tom Hughes-Lloyd, Mini Moves, Rhys Yeomans, Rory O'Shea, IMD, Godson and Antics on the bill for next Sunday's final, which will take place in front of a crowd of 6,000 at London's Olympia.