I registered to this forum, just to help you out in your search.
For BJJ, check out http://www.graciebarracountryside.com/index.html
. I don't have any personal experience at this school, but its a Grace Barra academy the name sells it self.
If you are looking for BJJ and MMA, I recommend Victory Martial Arts Academy. They have 2 location: Forest Park, IL and Orland Park, IL.
I have been training there since July '08 and I have never looked back. The classes are very structured. 1 hour of stand up and 1 hour of grappling training and heart pumping condition embedded throughout the class. It's the best 2 hours of my day.
Check out their websites
Academy Site: http://www.victorytapout.com/
Academy Blog: http://www.victorymartialarts.typepad.com/
and if you search "victory martial arts" on YouTube, you'll find a bunch of neat videos by the academy.
This is not a sales pitch, but rather me sharing my opinion about the academy.