That's cause you are irish yourself,
I don't find the irish accent that sexy, but I always get mine on the go when drunk and meeting girls (See, I lost my Irish accent around the age of 10 being brought up in London, but its there on demand if needed

)
Anyway, for me, its gota be a northern accent, especially geordie. Cheryl cole's voice = now please.
I cant stand most american accents, but some are nice enough! I think it's because there are so many types I get lost with them. :woo: