Trim, taunt and terrific. No, we're not talking about bronzed babes on overpriced exercise bikes in late night infomercials, we're talking about your Top 20! The opening routine was something of a family reunion – well, if your family was made up of the sassiest, slinkiest, shiniest dancers produced by this big brown land of us. Decked out in killer suits, which not only riffed on a 1920s gangster of the Chicago kind but reflected their individual genres as well, we catch up with Courtney, Khaly, Kassy, Hilton, Steph, Marko, Laura, Sermsah, Camilla, J.D., Jemma, Anthony, Henry, Rhiannon, Graeme and Vanessa were all introduced in turn, reminding us of why they were chosen to be part of this incredible competition in the first place. The Matt Lee choreographed extravaganza to Rianna's trademark track, 'Don't Stop the Music' showed off the strengths of all the Top 20. With Ballroom, Hip Hop, Jazz and Contemporary all thrown into the mix, the routine even bought all three judges and choreographers Jason Gilkison, Nacho Pop and Kelley Abbey to the stage! "It was fun – kinda weird actually!" says Kelley in regards to her chance to strut her stuff onstage. "It was weird because you're used to putting them up there and all of a sudden, you're up. But the whole thing was good fun - a less pressured, more relaxed atmosphere." With trips down memory lane cut into the whole show, taking us right back to the very beginning of the audition process, tonight's performance is shot with sweet nostalgia as we remember the characters we've met along the way and the dancers we've grown to love… but the question of everyone's lips was the same – who would walk away with the cash and the kudos? But before we get to that, we're treated to a style we haven't been able to feature on the show because of the rehearsal time required: tap! Industrial, masculine and pulsing with a strong staccato rhythm, Dean Perry and the tip-tapping Tap Dogs made sure we were sitting up and paying