Slight west-country twang I love the sound of! Welsh and Geordie also. Brum accents make you want to pat them on the head and go "aww".
I don't think accents can make a person more attractive but some are pretty off-putting eg. very strong Scouse, general Lancashire, Scottish and God forbid the "East-end" cockney.
I love Geordie, Welsh, Scottish and West Country accents, as well as the 'posh university accent'.
I detest pretty much all the northwestern accents and am not a fan of the Black Country one either.
I love the Irish accent on girls. Other than that, no.
American (California, New York, Florida accents) or Australian