How to manage a list of things in n3 and convert it to XHTML from Karl Dubost in www-archive. Karl turns his open source CMS software list into DOAP (in N3 format), then with the help of cwm queries it and produces results in HTML.
(I noticed this go into the archives but forgot to blog - Karl mentioned it in comments over at Shelley's)
Funnily enough I've been contemplating doing something similar with Dave Beckett's Resource Description Framework (RDF) Resource Guide. Once this kind of material's available as RDF the remix potential's enormous. A fairly immediate application I've got is tying it into my project management stuff so that for any given task/action a bunch of existing references (and/or associated tools) are immediately available.
A not-unrelated application, working with documents + metadata, would be tutorials on demand. Imagine entering the keywords for what you want to learn about into a form, and getting something like this generated automatically.[Danny]