I too am in Dayton (I work downtown by Schuster). My boss mainly shoots the D stuff, but I'm migrating back to analog after quite a while (35mm and 6x6), though I still like to play around with the strobist style stuff too. I'm relatively new to APUG after having been a lurker for quite a while. I've noticed that the two main local clubs/groups are almost entirely non-analog any more so I haven't really been interested in joining them. Depending on what subject matter you like to shoot I've noticed that the MetroParks from time to time have some decent nature walks and photography related activities. Plus Outdoor Photographer has Sugarcreek Metropark listed as one of their top favorite places to shoot.
Unfortunately, most photo groups, events, and activities seems to be in either Columbus or Cinci.