Rows 1-6
Rows 1-6 have an extra couple of inches of legroom. This is more noticable on the A320's that were originally for Iberia. You also get served quickly on the sky-cafe service (usually rows 1 and 3 first to be served) and on a short flight like MAN-DUB which I take regularly this means you actually get to finish your coffee before landing!
If you are an Aer Lingus gold circle member usually these rows are allocated to you without the extra €10 charge