The votes are tallied and the public has spoken. Simon Tierney hosts the countdown of the five greatest Irish heroes of the last 100 years. Legends from the world of politics, sport and entertainment compete for the top spot, but there can be only one. Journalist Michael O'Regan, writer & broadcaster Barbara Scully, and Deputy Political Editor from The Irish Examiner, Elaine Loughlin give their take on the nation's choices