There are several groups in and around the Chicago area. I'm a member of a Plainfield/Naperville/Aurora group called PALE (http://www.palebrewers.org/). There are several members of HBT in this group and we meet once a month at Limestone Brewery in Plainfield.
Primary: Tripel Trouble
Bottled: Abbey's Weiss, Betty's American Wheat, Das Boot Kolsch, Coffee Stout w/Cocoa Nibs, Coffee Stout, Imperial Amber Ale, West Coast IPA, Nelson Sauvin Session Amber Ale, Belgian Golden IPA, Ya Mama's Best Milk Stout