However, that attention reached new heights in 1994 when he represented Ireland and won the Eurovision Song Contest along with Charlie McGettigan.
In the late 1990s, Harrington was the performer of choice for many of the A-list celebrities that would frequent the VIP Room in Dublin's most prestigious nightspot at the time, Lillie's bordello, here he would regularly entertain and be joined by, stars from the world of music, film, and television.
Flatley was so impressed with Harrington that he created a role for him as a principal singer in his dance extravaganza Celtic Tiger Live.
The Harrington Brothers performed "Molly Malone" live at The RDS Dublin just before Leinster played Edinburgh in the Heineken Cup.
For the last five years, Harrington has had a regular slot on The Pat Kenny Show on Newstalk; The features include "The Popular Irish Ballad – a brief history", also every Tuesday morning "The Lyric's The Thing".
In 2017 and 2018, Harrington wrote and presented the documentary Ireland’s Eurovision Winners, which was released on DVD and is also due to air on television.