The Dayton Dynamic Language User Group is primarily focused on, as you can tell by the name, dynamic languages. If you're interested in Ruby (including Rails), Python (including Django), PHP, Perl, Javascript, Scheme, Lisp, Smalltalk, etc, this is probably the place for you. We try not to talk specifically about things like C and Java, but there are no hard and fast rules (especially if you're comparing them to a dynamic language).