Chicago Originals is a group of 15 independent restaurants in the city and suburbs. They will once again be celebrating their annual two-week

Restaurant Week on January 18-31, with special 3-course menus for $29.10. Details of the promotion are on the Chicago Originals website
here, and you can see a list of the restaurants in the group
here.
This is separate from the Restaurant Week promoted by the Chicago Tourism Bureau and held this past year the last week of February and extended to the first week of March. There's no word yet on dates or details for that promotion if they decide to hold it again in 2010.