Thomasec, I lived one year in Cincinnati, and I miss Jungle Jim's too!!! Also UDF and Graeter's. I'd be happy to never see a Skyline Chili again, however.
I'm listing the places I eat as a regular on Chicago's north side that reflect my favorite things about the city: no pretention, heart, quality, great people, great atmosphere, and of course, fantastic food.
Bistro Campagne -- french bistro in Lincoln Square. Great food, great wine, great service. I've never had a meal that was anything less than excellent there.
Friendship Restaurant on Milwaukee in Logan Square - delicious and innovative Chinese
Fat Willy's - BBQ on Schubert. We used to have to drive deep into Kentucky to get BBQ this good in Tha Nasty!
Scooters - I dunno about you, but they don't have frozen custard back east, and this is the best I've had. I think they've just reopened for spring.
Margie's on Western/Armitage - an old-school ice cream shop, the decor'll blow your mind.
Frances Deli -- on Clark in Lincoln Park for late breakfast, deli sandwiches and milkshakes.
El Cid II - but part of the charm is sitting out in the patio, so you might want to wait till it warms up in the spring. Fish tacos there are great. And I am also a fan of their breakfasts. Very cheap, great service.
Happy dining! You've landed in a wonderful city for a foodie!