Hwy777's Christian Podcast Directory
Hwy777's Christian Podcast Directory is, well, a directory of Christian oriented podcasts.
It uses a single level of topics and they apparently have a very small number of podcasts indexed on the site. There is a simple "Suggest a Podcast" link, making it easy to ask them to include your podcast. Clearly they're going to screen them carefully, so devil worshipers need to go elsewhere.