i deffinately do!!
when i worked in a shoe store, i would get so nervous with thick foreign accents because when i couldn't understand them, they would always get mad at ME for not understanding THEM.
argh!! i would get so mad b/c they'd get so frustrated with me when it should be the other way around if anyone's gonna be frustrated.
i did have one guy though from Mexico, and he knew very little english and we basically had to sign the whole time but he was so nice, i was very appreciative - i'll probably never forget him, little things like that go far.