Check out the following podcast sites.
News Directory - categorically directory of podcasts
Search - categorical search engine of podcasts
Podcasts - categorically directory of podcasts
- new Podcast.net directory.
Podcasts - directory of podcasts.
- podcasting director
Central - podcast central (very small directory)
- Podcasting people, apps, technology, and news
Podcasts - Podcasting people, apps, technology, and news