For this Drupal powered website I've developed a module which lets you select a category from the Open Directory Project and imports the full collection of sub-categories and links.

It takes care of downloading periodically the full dmoz exported data, extract the chosen category, and import it into Drupal. The imported data is browsable on the website, exportable as RSS, or can be included in another web page using some javascript code.

On this project I've been working for Alquimia, and this module has been contributed to Drupal: dmoz module.

Llengua.org - Screenshot