Two of the biggest boy bands in pop history, New Kids On The Block & Backstreet Boys, brought their NKOTBSB Tour to the UK on April 28, 2012. The second night on April 29th at the world-famous O2 Arena also set a milestone- the show was broadcast online and in select theaters all over the world via livestream. NKOTBSB first shocked and delighted fans when they took the stage together for a medley at the sold out NKOTB Radio City Music Hall show in 2010. The two groups wowed audiences again in their first joint televised performance at the American Music Awards in November 2010 and then went on tour together in 2011 through 2012..