As a former adcom, I ran the gamut from cringing to eye rolling while reading this. Why is a law student writing this article anyway? Not that his intentions weren't the best I'm sure, but this is the kind of advice that should come from an adcom. I wouldn't go trying to write an article about the "dont's" according to law school adcoms when I've never been one!
Premeds, the best way to get good at interviewing is to practice interviewing. Do mock interviews with your school's premed committee, friends who are already med students/residents, faculty, etc. Read about the med school before you visit so that you have intelligent, specific questions to ask the interviewers. While you don't want to sound like you're reciting a part in a play, a little preparation goes a long way toward making you come across as polished and professional.