Highly cool!:

GutenMark, a Project Gutenberg markup program: GutenMark is a tool for automatically creating high-quality HTML or LaTeX markup from Project Gutenberg etexts.  In combination with other freely-available conversion tools, GutenMark can convert Project Gutenberg etexts into publication-quality Postscript or PDF, for print-on-demand applications.  The goal is for this conversion is completely automatic, without manual markup or editing.