I'm going to Chicago this week and have one day and one night to eat wherever I want. I only get to Chicago about every 7 years, so I need to make the best of my dining on this one day. What restaurants should I have lunch and dinner at? Obviously, Charlie Trotter's is top of my consideration, although I'm not certain my dining companion will like the idea of a fixed menu, so I'm looking for alternatives. What should I not miss? Thanks!