Interviewing is an art form.  If not done wisely, the most qualified candidate could be easily ruled out.  On the flip side, if a candidate that is more of a long shot interviews exceptionally well, the hiring manager may be inclined to take a chance on them.
So how do you become the candidate that nails the interview?  Victor Lipman, of forbes.com, compiled several points to make sure you address before an interview.  First and foremost, the most important thing to do to prepare for an interview is to learn about the company.  This entails doing extensive research about the prospective company to truly understand what it is they do and what you will be doing.  If this is done properly, the candidate can more effectively answer the interview questions with answers targeted to the specific company.  This will certainly perk their ears in the interview and make you a memorable candidate.
Read the article, “How to Interview Effectively,” to be an interview savvy candidate.