Unfortunately, I don't remember any specific questions. I will say, though, that after coming out of the interview, I thought of it as more of just a "conversation" than a "formal interview." The professor just wanted to get to know me. I've heard a number of students say this as well. This probably wont quell any anxiety you have, but I tell this to everyone who interviews. Personally, I think the professors primarily look for personality above anything else. Don't get me wrong, though, they'll probably ask at least one stereotypical interview question. It may just depend on the particular professor you get. Oh, they'll probably ask you about your views on research. UM places a large amount of emphasis on research, so I would be prepared to answer at least one question on that.
