The Ann Arbor Science Fiction Association, otherwise known as the Stilyagi Air Corps, is a social and literary club. See the website for more information. Meets on Tuesdays at Tios on Liberty St. at 9pm for dinners, and also holds regular parties. These events are open to anyone who wants to attend.
The club sponsors the annual ConFusion SF Convention, held in January at a hotel somewhere in the greater Detroit area.
AASFA Website with Event Schedule: http://www.aasfa.org