i still regret it but when i was in Chi town i never got a real deep dish pizza... shit pisses me off.
The other point though is if you are in Chi town and drunk stop by Culvers. That is some good eating one of my favorite semi local hambugerias that i have come across. the rueben is good too but it lacks the sour punch that want from pickled foods so i usually get some extra mustard to dip.
If you are in the Chi town metro stop by the piggly wiggly and get some firewater and then go to culver for drunkchies and your night will be fire.