Local chain of restaurants, which has now expanded to Ohio and Indiana -- best known for delivering pizza, but they have sit-down menus in some locations as well. Notable for their square deep-dish pizzas.
They have too many addresses to list here, but their website allows you to type in a Zip Code and find the one that delivers to you.
Cottage Inn website: http://www.cottageinn.com/
The William Street location is serving a free lunch on Thanksgiving in 2009 from 10 a.m. to 2 p.m.