Jim Campbell has been working lately on organizing a Chicago GNOME hackers group called GNIGHTS of GNOME. We had an informal first meeting last month at FreeGeek Chicago's Software Freedom Day (our group consisted of Jim, Brian Cameron, Chris Webber of MediaGoblin and me, with lots of local hackers and FOSS enthusiasts stopping by to hang out, ask questions, and talk about their own projects). Starting on Saturday, October 27 (11 am start time, @ 3519 N Elston -- we'll be hacking until early evening), we are going to be meeting once or twice a month at Pumping Station:One, the local North Side hackerspace here in Chicago.
FreeGeek Chicago has also offered to let our group attend their weekly hacknights. This semester I have classes until late on Wednesdays, but Jim and Brian may be attending these pretty regularly, and I will hopefully make it to a few over Winter Break.
If you are in Chicago, come and hack with us!