This is an absolutely fascinating thread-- thanks to Rachel Zahorsky for the original article, and to sunchild and other commenters for thoughts and inspiration. Am very interested in contacting others on this list with an interest in both law and code.

I recently wrote about version control and law on quora: http://b.qr.ae/kRgGyk, and about 'open sourcing' access to the tax code here: http://blog.tabulaw.com/2011/06/open-source-tax-code.html.