Mine was interesting.
My interviewer started off saying you've got a great background and international experience but I really want to know if you'd 'fit' in at INSEAD. So the questions were things like challenges, achievements in life, more about my startup, balancing situations, what do you want to do (and he didn't want to hear the goals in my essays
) ...
He was nice and informal, but there was a certain 'something' - like he could see 'inside' everything I was saying and it was a little unnerving
The interview was conversational, but that's a double-edged weapon ... you end up saying things you wouldn't have said in a formal office environment
Good luck to everyone. I just want to hear from my second interviewer and end this pain!