The interviewer asks this question to determine how interested you are in their type of academic program. Tell the interviewer whom you have seen or will see, and relate a commonality among them. Interviewers ask these questions to determine your self-image. Don't dwell on the negative. Briefly mention a weakness that you are taking steps to overcome or already have overcome.
Interviewers look for the ability to overcome difficulty.
Concentrate on strengths and weaknesses related to the academic environment. You may be asked questions about health care reform, abortion, euthanasia, or other current controversial issues. You are not expected to agree with the interviewer. The interviewer is interested in what other careers you are considering and how realistic you are in your planning. Everyone should realize that not being accepted is a possibility and that alternate plans are essential.