I don't like when actresses and actors fake accents, I feel I get pulled out too much, to me it just feels so very unnatural. I love hearing his or her real voice and I prefer even if she's playing a different nationality to just talk like herself, I find it's like they put too much effort into their accent and too much emotion gets lost.
Like OMG have you seen 13 Days? Kevin Costner was just so very distracting to me, I just couldn't stand hearing him talk, but Bruce Greenwood didn't fake an accent and he sounded just perfectly fine, I didn't need him to try to mimic John Kennedy's accent to make me believe he's playing him, you know what I mean?