[3] To draw up an initial shortlist of 40 names, RTÉ commissioned an opinion poll of 1,000 members of the public,[4] carried out by Ipsos MRBI in late 2009.
[3][7] The ranking of the top five, and the advocates who each present a one-hour documentary about one of them, were as follows:[3][9] The following people were shortlisted:[1][3][7][8] The list of nominees for Ireland's Greatest was criticised by historians Diarmuid Ferriter,[10] Tim Pat Coogan, and Maurice Manning,[5] and Irish Times columnist Noel Whelan.
[11] They said that the list was skewed towards recent times, and that many nominees were celebrities from popular culture or sport rather than people who had made a lasting contribution to society; Ferriter said "It is going to be very hard to take this seriously for historians".
[10] The top ten were:[14] In September 2009, RTÉ ran an online poll in sponsored by Paddy Power to nominate Ireland's greatest sportsperson.
[17] The top ten was announced on 31 December 2009:[18] The other 22 were:[17] D. J. Carey, Eamonn Coghlan, Ronnie Delany, Ken Doherty, Mike Gibson, Johnny Giles, Kevin Heffernan, Alex Higgins, Jack Kyle, Eddie Macken, Tony McCoy, Barry McGuigan, Aidan O'Brien, Mick O'Connell, Christy O'Connor Snr, Mick O'Dwyer, Jack O'Shea, Mary Peters, Stephen Roche, Henry Shefflin, Michelle Smith, and John Treacy.