Some accents are awesome to do. Especially the English ones, yet people stop me in the street, seriously - if I'm from England. Nooooo, Australia.
We saw a busker a few months ago (the reason for that old busker thread that popped up here a while back) and the girl there asked if I was from England. Nah, but she was - Liverpool. And I had a hell of a time this morning - not.
My English accent can be a giant mess since I love imitating different accents. I think I sound pretty American when I'm just speaking relaxedly though.
We were of course imitating different Swedish accents at my table though