Chicago had 7 inches of rain last Saturday. The roads to and from O'Hare airport (and there are only a few) were all flooded for a while, as were the train tracks in and out of there, so apparently no one could get in or out of there for a while. Many people I know had flooded basements and some had water coming in through the walls of their homes due to flaws in tuckpointing. Lucky for me, my building was fine.
Many of the areas around the Chicago River are still flooded and one of the major road arteries on the south side is still closed due to flooding.
I, of course, missed the whole thing since I was in Boston on a business trip! I flew back from Boston on Sunday morning where it was already pouring by that point. It was a 7AM flight and we were all set to go when the pilot comes on and says there's "a leak in the cockpit." Long story short, I was 4 hours late getting home.