The best answer, I would say, is to tell a compelling story about yourself. However, only do this when the interviewer asks. For example, if your interviewer asks you what your biggest accomplishment is, create a good story that is unique from what most people would say so that your interviewer will remember it. I don't recommended that you ask your interviewer personal questions (that is creepy) or to keep on bragging about accomplishments (that is plain annoying). Of course, telling the interviewer you have to leave early is already a big turn off as well.
