i hated asking this question...and most of the psychiatrists on the adcom loved asking it..... go figure. it's a really tough question to answer because although you do want to seem humble and imperfect, you also don't want to come across as either someone with low self-esteem, or someone whose weakness could be something that can weaken a class. and there is no way to make the response to this question not seemed rehearsed...everyone thinks about it.