Your introduction should be concise enough to hold the interest of the interviewer. Generally, a quick recap of your most compelling qualifications will suffice. You could also throw in a couple of tidbits which are not essential to the job, but reflect your persona like the fact that you are an avid skier, have performed at comedy clubs, or collect African art. Your goal is to connect personally with the interviewer as well as to show that you're qualified for the job.