If, during your research on the department's faculty, a faculty member strikes you as someone whom you might be interested in working with, indicate this in your essay; be concise and specific about why you want to work with this person in particular. A word of caution here: Do not try to use this as a way to "butter up" the admissions committee, because if there is any reason to believe that you are not sincere, your application may be adversely affected. Again, mention the person and how their work relates to your interest, but don't load this statement with what might be interpreted as false or superfluous praise.
Write the first draft from this, then try to find an angle or a hook which can sink into the admissions committee; a good place to start is with an original and provoking opening paragraph. One of the worst things you can do with your personal statement is to bore the admissions committee, yet that is exactly what most applicants do. Admissions committees see thousands of "I have always wanted to be a..." opening paragraphs, so a good way to make the essay more interesting is to write about an anecdote or memorable incident that led you to choose the particular profession. This can help add drama, vitality, and originality to the statement. It is important, however, that the anecdote is related to the questions asked and not just a retelling of a catchy life drama.
Free Admission Essays & Personal Statement Examples