There are so many that I find attractive, but if I had to pick just one it would be an Irish brogue. I had a patient once and he had this thick Irish brogue. I just got down right giddy. Love it. If he looked at me and said drop your pants I would said OK, no problem.
Ellie Goulding's voice is a prime example of my favorite accent. I absolutely die when I meet girls with that accent. Swedish is even better, but much more rare here and that's why I put it second. I would marry a Swedish girl if I ever met one =P. Midwestern American because that's where I'm from and I think it's a pretty good accent, nothing too crazy and nothing hard to understand.
I'm a sucker for pretty much all foreign accents. Well, all except asian, because thick Asian accents are super hard to understand.
But yea, all others, french, Spanish, russian, german, English, aussie, they automatically raise a girl's number on a 1-10 scale by one point. If she was a 7 without hearing her speak, she's now an 8 with a awesome accent
Well, I think, posh British accents are hot, not quite as hot as Indian accents though. Spanish men also have very very nice accents. Irish accents are hot. And I'm also fond of Japanese accents. ;) Why? Because they are... I don't really have an explanation.