Interviews are tough - some questions are easy - and some catch you off-guard. These are the ones you should REALLY prepare for.
Most interviewees don't realize the questions they ask also play a major part in honing that impression. So you need to plan, make time, and ask them.
It was a real pleasure last night presenting to your chapter of the American Marketing Association! I had a great time, I hope you all went away with lots of information and we all had some great pizza!