Frank McNally

This is an hilarious book! It's wittily and entertainingly written and it shows next to it's sometimes black humor a fondness of the country (Ireland) it is about. Jokes on "the Irish" and cultural specialties aren't cruel or mean but really funny.
A reoccurring theme (or problem) is that of the (more or less confusing) road signs, and of course language differences from Irish, Irish English, and English English get discussed too.
It is a book that gives you a bit of insight to peculiarities and differences of the Irish and a bit about the historical and political background.
Nice guide to read before heading off for a visit, or coming back from one, or just being interested in the country.