Greetings - I've just joined the forum - what a fabulous range of ideas and suggestions ... so this is my first posting from 'down under' (land of Oz)

I've visited Chicago pretty regularly over the past 5-6 years, and will be back for a week in early May 2007. I've decided it's time to spread my wings and see some of the sights around (rather than just in/downtown). Any ideas on what I should do from those lucky enough to live there/visit more often?