Recently I'd downloaded all templates from templates.services.openoffice.org, so I decided to share all of them --
Extract the file, you'll find 4 more archives with names to that of openoffice/libreoffice applications, extract them too to get the templates for the respective applications.
You may install the usual way using the templates organizer dialog, as an alternative you may place the extracted folders to ~/.libreoffice/3/user/template, the folders will act as categories of the templates (i.e. in the organize folder dialog, you'll see these folders and inside them will lie the templates).
Notice, these are a lot of templates, so opening the templates list in openoffice/libreoffice might take a long time.