Nothing especially interesting - they have a list of questions they're supposed to ask you, so everything is pretty standard. Since it's closed file you end up repeating stuff on your AMCAS. You'll have one faculty interview and one student interview.
I read the school's website, got other info off the net, thought about answers to typical interview questions, and prepared my own questions. If you're prepared, it should be really relaxing. I also talked to my student host, and she took me on a tour of the facilities the night before so I knew where everything was.
What was the most difficult question?
Nothing really difficult, but be prepared to have some good questions for them - they leave a big portion of the time for that, and both my interviewers were impressed with my questions and said they liked that I had obviously thought a lot about the school. Because of this, both interviews went about 15 minutes over, and I had more of a chance to let them get to know me.
The facilities are incredible, and I personally really liked the area. The physicians we spoke with were beaming - obviously thrilled to be there. Dr. Ackermann is amazing, but he'll be retiring in October. Also, the students, including my host, were really friendly and very down-to-earth, and they seemed to be genuinely happy to be there.
What impressed you negatively?
I actually didn't like the closed file interview. I don't know how they can decide among the applicants based on those questions. It was almost too easy and relaxed. If you can't handle that interview then you shouldn't be a physician.
What did you wish you had known ahead of time?
How relaxed it was. I would have been much more at ease the days before.