I wrote:
I started using Tcl when working for a Unix-only ERP software company. After spending two years becoming a bash ninja writing build and distribution scripts, management declared that we were moving to Windows. I decided, never again! Everything I wrote in Tcl ran everywhere, and I never looked back.
The four-word case for Tcl: stability, portability, orthogonality, power. It's the worst possible tool if you're interested in persisting with the dominant crappy software development practices of the present day.
In 2008 I was a participant with the Tcl Community in Google's Summer of Code. I mentored the tcl-fuse project.
I participated in 2009's GSoC as well; I mentored The tcl-map GSoC2009 project.
I live in Chicago, IL, USA. Drop by!