I'm Zach Beane. I'm not in the immediate Boston area, but I'm not too far off (Portland, ME) and might be tempted to travel for a Lisp-related meeting.
I've been using Lisp for a couple years for hobby project. I work with SBCL on Linux for a few different things; the most visible is Planet Lisp (http://planet.lisp.org/), which uses a combination of Python and Lisp to collect a bunch of Lisp-related blogs. I've also done some work to write out Flash movies from Lisp, and as part of that I have some code that processes TrueType files to get outline information. Fun stuff!
Zach