Header ID Generator is a simple filter module which ensures, that each header in the content does have unique ID attribute and if does not, it creates one. This can be useful for linking to particular header in the content or for table of content (TOC) building. Some search engines can make use of that and build the TOC by themselves in the search results display. So this module could be used for SEO purposes too - see Osnovy: vybrané odkazy dovnitř dokumentu (in Czech).
The Ensemble Video module for Drupal enables content editors to easily embed single videos and/or playlists from their Ensemble Video installation into their Drupal instance. Users with permission to manage Drupal's structure can add one or more videos and/or playlists field instances to any content type (e.g Article or Basic Page). Each field instance can be configured to search and embed media from any Ensemble Video installation.