This seems to be a yearly event. If you are going to be in downtown Chicago on Saturday, Sept. 24, 2011, you might get to ask a question to a Nobel Laureate. Leon Lederman will set up table in front of the Wrigley Building at Noon that day, and will field questions from everyone.
I wish something like this is done very often. It doesn't have to involve eminent physicists all the time. The general public doesn't get to meet, or ask, physicists many of these questions that they have, and thus have to rely on what they can find on the web, or through the media. We all know how bad those can be. So having events such as these where the public has the opportunity to listen and ask questions can and should make a difference. I highly support such things.