I had occasion to stop in Dunnes yesterday in Charleville, County Cork and I have to say the middle-aged english gentleman who served me at the check out was the most pleasant shop assistant I have ever met.
It was a refreshing change from those people who usually stare blankly right through you as youre receiving your change, and dont even say "thanks, bye". (They usually wear Olympic-sized rings on their ears)
So my vote goes to the jolly guy in Dunnes Stores Charleville!