The interview was awesome. I cannot make too many recommendations since we may get different interviewers. I had a total of 6 forty minute interviews. By the last one, I was a bit tired, so eat your wheaties that morning.
I did not get one ethics based questions. It was all about my research interests and my personal experiences. I did get, "Where do you see yourself in 20 years?" I guess its not the standard 10 for just MD folks, since we are preparing to spend the rest of my life is school.
Once I got there, I found out that the program is an average of 8 years (S.D. of 6 months). They say 7 in the website, but 8 is more common.
Hope this helps. Good luck and enjoy yourself.
Isid