I went back to BMA after the midyear conference to look around on my own. Unfortunately they were closed the day I went. As a result of talking to the clerk at the gift shop I wandered over to the Homewood museum on the Johns Hopkins campus (opposite end of the block from BMA). Some nice pieces of furniture and a pretty interesting tour. I wouldn't make a special trip to Baltimore for it, but if you are in the area it's worth stopping in and taking the tour.
http://www.museums.jhu.edu/homewood/
http://www.museums.jhu.edu/homewood/