The Washington Science Fiction Association is sort of a sci-fi/fantasy book club. They meet in members homes in the DMV twice per month. It might not be exactly what you're looking for, as I don't think they schedule individual books to discuss, but it is where fans and writers gather to discuss recent books in the genres. They also run a yearly convention, but I haven't been to one since the Disclave where they literally destroyed several floors of a hotel.

http://wsfa.org/site/