Daire O'Brien presents coverage of the second PRO12 semi-final at the Royal Dublin Society, where Leinster will take on Ulster. The winners will be looking to secure a place against Glasgow Warriors or Munster in the final. As usual, our hearts will be in our mouths wondering if it will be O'Driscoll's farewell match, but these Leinster lads could just have what it takes to go all the way.