Incredible!" Martin and Marielle impress the JudgesYou'll feel dizzy just watching tiny Marielle tossed into the air by Martin.Simon says their act is "one of the best things I've seen on this show."Watch it again and see plenty more full BGT clips here:http://talent.itv.com/2013/videos/auditions/watch_incredible-martin-and-marielle-impress-the-judges_item_200663.htmSee more from Britain's Got Talent at http://itv.com/talentSUBSCRIBE: http://bit.ly/BGTsubFacebook: http://www.facebook.com/BritainsGotTalentTwitter: http://twitter.com/GotTalentDownload the BGT mobile app: http://bit.ly/BGTappWatch full episodes on ITV Player (UK ONLY): http://www.itv.com/itvplayer