Are there any good bike shops close to the Loop?

About a year ago I got a bike at Kozy, which has a decent selection, and the staff was really helpful. I can't remember the name of the guy who helped me, but he was a really tall, nice and smart African American guy, so if you see him he'll be a big help. I don't know much about bikes (I bought a casual hybrid bike) but I felt like I got the perfect bike because of his service.