A new version (v1.2) of my python script for converting markdown to latex is now done. markdown2latex (renamed from mkdn2latex) has been extensively refactored to become a proper python-markdown extension. This means it can be used seemlessly alongside plain markdown conversion, as well as independently whether as a module or, in its classic form, from the command line.
In addition for ease of installation it has also been turned into a proper python package and registered on pypi so you can just do:
$ easy_install markdown2latex
Alternatively you can still get it straight from the repository at:
http://knowledgeforge.net/okftext/svn/trunk/python/markdown2latex/