this subject annoys me. I was taught in 2nd grade that "this is she" is correct and since second grade it is what I have used. People around me use "this is she" I have heard people say "this is her" but mostly at gas stations. Just because some people think they can alter a language with poor usage doesn't mean it SHOULD be altered. I am not perfect but if I was speaking incorrectly and sounded like an idiot I would hope someone would tell me. I would also remind you that other countries speak English, and would be offended at your arrogance to suggest that simply out of American laziness we should change a grammatical rule.