NOTE: Has not yet been extensively tested.
Creates a list of the paragraph styles in use in the document, along with the page number of the first page on which each style occurs.
Additionally, compiles page numbers into a list at the bottom, for the purpose of creating PDF sample pages.
Mac Users: Install in Macintosh HD/Applications/Adobe InDesign FOO/Scripts/Scripts Panel/
Big thanks to Dave Saunders for releasing some code to get this started, in a valuable script that prints a list of styles in use, styled with its own style (so meta): http://indesignsecrets.com/scripted-style-lists.php