Just be genuine and honest. As someone who hires dozens of people a year, it's easy to see when someone is just telling you what you want to hear instead of genuinely being themselves. You're clearly a very intelligent person, that won't be an impediment to impressing them. They want to know who you are, what you're about, to try to determine something about your character. Levi is right, all things being relatively equal, it's about the right person, not necessarily the right credentials. If you give them an opportunity to learn something about you, it sets you apart. Definitely be curious, they are going to want to know why you want to work for them and have it be for the right reasons. Having an answer for that requires knowing something about them. And yes, ask questions, people in charge love to talk about what they know. Good luck.