Dave,
I've just been looking through the pgAdmin II src and have downloaded a
trial bit of software from http://www.aivosto.com called Project
Analyser.
Unfortunately the trial version only allows a maximum of 10 files to be
reviewed but I was very impressed with the speed of the analysis and the
quality of the output.
The analyser produces graphical and textual documentation of VB code and
also produces quality metrics i.e. dead code, code depth,
cohesion+coupling etc.
I thought you (and the pgAdmin team) may be interested in the results.
rgds
Steve Boyle
P.S. Don't be alarmed by the 'dead procedure' references, most of them
are probably due to only being able to select 10 files.