I am a self-employed commercial software developer and I work at home, so I don't really have any peers. I started this group to give myself and others a chance to meet other programmers and share ideas.
Meet and drink beer with other local Software Developers. Discuss various programming languages and techniques, software architecture, cross-platform development, iPhone development, etc. We're an informal, social group designed to get most of us out of the office/home.
Our members cover a huge cross-section of the programming industry, from web to embedded, desktop to iPhone, from Java to C++ to Haskell.
If you program, either professionally or as a hobby, you'll probably get something from our group.