I was lucky enough to have spent a couple of weeks in Ireland, about 5 years ago. Was fantastic. We hired a car and drove south from Dublin, around the bottom 1/2 of the country up to Galway, and then back across the middle to Dublin.
Heading out onto the M11 directly from the place I got the car was some experience, driving on the left for the first time. Luckily we pass on the right all the time here on the 401, as nobody understands the left lane is for passing.
Wonderful country, and amazing scenery. Granted, I still live and breathe for the granite outcroppings and fresh water lakes of the Canadian Shield, but boy, Ireland is something else.