See more from Britain's Got Talent at http://itv.com/talentThey've come all the way from Siberia to show the Judges their unique dance and light routine."That is one of the best things I think I've EVER seen," says Alesha.Could it be "da's" all round?SUBSCRIBE: http://bit.ly/BGTsubFacebook: http://www.facebook.com/BGTTwitter: http://twitter.com/BGT