I was very pleased with my interview day experience. First, it is important that you are there by 7:40 because the orientation starts at 7:45. The orientation was mostly about the admissions process and how competitive it is to get into the U. They explained that after interview day there are no status updates until you get a letter that either says you've been accepted, rejected, or put on the wait list.
After the orientation interviews start at 8:30. You will have 3 interviews during that day. Two of them are with faculty and one is with a 4th year student. It seemed to me that they tailored the interviewers to parts of my application. For example, I have done biochem research during my undergrad, so one of the faculty was a biochem researcher who works at the medical school. I also had quite a bit of international experience, and the second faculty (he was an MD) also had international experience. Overall I feel that the interviewers were fair. I did not have any ethical questions like have been posted above. All of my questions were about my application. The interviewers only get to see your AMCAS personal statement and activities, the U of U Secondary materials, and your letters of recommendation. This means that they do not see your MCAT or GPA, and you are told not to bring them up. Each interviewer did a good job at answering questions that I had. I especially found the 4th year interviewer to be the best at this because she knew more than just the typical admissions information.
After the interviews you are taken on a tour of the new (circa 2005) health science education building. I was very impressed with the facilities and the opportunities available to the students in the new building. After the tour you go to lunch with second year students. This is very informal and you are allowed to ask any questions that you might have. They tell you that this will not effect your application at all, so feel free to ask anything. After lunch, most people in the group were finished because they had all of their interviews before lunch. There were 3 (of 8) who still had one interview after lunch, but it didn't seem to be a big deal.
Overall the interview day was a great experience. The admissions staff is very kind and friendly. They do a good job at helping diffuse any stress, and are willing to help with anything that you might need during the day. The U has a great medical school, and I would love to go there if accepted. Unfortunately I wont find anything out until March. Hopefully this helps those of you who have interviews there soon.