Hi MLH:
I have actaully thought of this exact situation because my husband and I are looking at houses and many have the brick fireplace...UGH. I am so excited to see your responses.
So, here are my thoughts: I once saw a Divine Design on HGTV where Candice Olson put tile over the brick and it was amazing. I would start by taking a look at the HGTV website. They have many ideas. Just search fireplace. Secondly, I would try contacting the merchandise mart to see if there is anyone in there that could point you in the right direction. (I wish that I could be more specific as who to contact but I can't maybe another poster could.)
I hope this helps...a little. :-)
A.