Rock on Chicago Food-Fi '10! For the dedicated gourmand, I humbly and strongly recommend you peruse this:
LTHForum.com • Index page
for recommendations. It's named for "little" Three Happiness, a long-time Chinatown favorite (this is the small Three Happiness on Cermak, as opposed to the big, "new" Three Happiness on Wentworth).
LTH is a splinter from the Chicago Chowhound boards. It was a bunch of dedicated, long-time forum members who got sick of clueless newbs, fanboys and shills, so they started their own board. It's informative without being snobby, clubby and high-school-cliquish.