After interviewing at U of C this year, I absolutely loved the program. It was number 2 on my ROL. They have a pretty extensive website that you should visit. Also, check out comments on scutwork, written by residents and students who have rotated through.
A friend of mine is an intern there, and he loves it, too. The residents seem to get along great. The PD is wonderful, and they cater alot to the residents. U of C is perhaps the second oldest EMed residency program, and thus, extremely well known. It seems to be pretty competitive program to get into. The PD said he only invites students who attended one of the top 50 medical schools, but I don`t know how true that was. The residents rotate through several different hopitals, and are exposed to a good variety of patients. They even have special lectures on medical coding, so they come out making the most money for their work.
I don`t really know what to write, so I suggest you check out their website, and again, scutwork.
Best of luck..