If you haven't eaten at Bob Chinn's, you haven't had seafood.
Bob Chinn's is a rarity in the midwest, a great place that flies their food in fresh every day, and that takes care in producing it.
I've had a variety of fish (typically blackened, which is fantastic!) and have never been disappointed. Their crab legs are also great, but those are easier to find elsewhere so I typically get the fish.
On a note -- the Chicago Bob Chinn's is not actually owned or operated by Bob, so make sure you go to the Wheeling location for the authentic experience.
If you live in the Midwest, go to Bob Chinn's!