One of my interviewers showed me SIU's latest Step 2 results, which were well above the national average. I really liked the situational-type questions that one of my interviewers asked. They were thought-provoking and, I think, really helped him better understand my problem solving process and skills--and helped him gauge my ethical/moral compass.
Both of my interviewers (one was on the admissions committee) made comments along the lines of "I've been in your chair, so I'm here to make it easy for you and try to help you get into medical school". So even though some of the questions were tough, there wasn't an adversarial feeling to them.