I tend to do fine with most english-speaking accents...except for Welsh. Oy, they are thick. I tend to stare at the tv- completely dumbfounded catching like every third word. I swear when I went to Europe, I often had a better time in Italy understanding people speaking Italian, then I did in parts of the UK listening to people speaking English. LOL. (And yes, English is my first language and no I don't know Italian, but I know Spanish and the languages are very close.)
I am so jealous that we dont have Torchwood here yet. I want to see it!