I remember 1983, 84, 89, 90, 95, 03 and 06 being exceptional summers (with 95 being the standout - I was working in Limerick city at the time and couldn't get over how warm the nights were - I don't think the temps dropped below 19 or 20 by night during that particular heatwave and regularly hitting 30 by day).
It's funny, I've lived in hot places (Chicago in summer, California, Sydney etc) and travelled to many more (Alice Springs,Las Vegas, Dubai) but the heat I felt in the summer of 95 in Ireland seemed far more "roasting" then the heat anywhere else
As for 06, I remember it being wet but not as wet as previous years. I think 06 was a year that we nearly got a way with a good summer but not quiet. Mind you compared to the previous summers and the summers that followed it wasn't too bad at all.