I am doing research at DMU with a prof that interviews for the med school (they all take turns). I have been drilling him for info for the last semester about what to do during interviews, here is what I have found out.
1. If you majored in something besides bio or some other life science, make sure you can defend it. Almost all the pre-meds I've talked to say, "It made me well-rounded." The interviewer will probable responed with something like this, "If you knew you always wanted to be a doctor, why major in a field that has nothing to do with it, it doesn't make scense." By the way, they know about the students that majored in things like philosophy just because it has one of the highest percent of acceptances per capita. I'm a philosphy minor, so I'm not bashing it. Basicly, taking well rounded classes is great, but if it was your focus, be ready for some questions.
2. As it was stated above, know why you want to be a doctor. Particularly a DO. "I want to help people" won't do jack. Also, some story about a doctor helping your dying grandmother and that is when you relized you wanted to a healer, that really ticks them off!
3. Research is good but if you did a ton of it, be ready for the "Why not a PH.D?" question.
4. They are going to give you an ethical situation where there is no right or wrong answer. It will be like, "What would you do if you saw a classmate cheating on an exam?" or "You have a patient who has HIV and doesn't want to tell his wife/girlfriend, what do you do?"
The purpose of this is to see how you articulate yourself. No matter what you say, they will probable challange you. Don't let it fluster you. Just respond confidantly!
5. Most importantly, BE YOURSELF!!!!! Don't try to sound like a genious, don't be uptight, try and forget that the rest of your life depends on the next few minutes (J/K).
The faculty at DMU are great, I really like it there and hope that in a couple of years I will be their student, not just the undergrad from the school down the street that ask all the questions. The facilities are really nice and they are in the beginings of building a new student union and some other stuff. They just re-modeled a bunch of the labs. I attended a seminar for the faculty the other day in one of the lecture halls...WOW! The hall had all office desk type chairs (wheels and very cusioned) and a ton of leg room, very nice
.
Good luck!