Its not Interbike or anything but I usually go because it's convenient. I got to take a spin on a Colnago and talk wheelbuilding with Rolf of Rolf Wheels last year.

http://www.chicagobikeshow.com

Still got the water bottle from last year for riding the free tram but they do charge a hefty admission :(

Here...

http://www.chicagobikeshow.com/coupons.html

Print and present at the door...