A great resource collections with over 100 episodes, all with transcripts. The audio is, as the name implies, rather slow, which makes it more accessible than more rapid, native content. The episodes themselves are quite interesting since they deal with cultural topics and you will learn more than just language from listening to Slow Chinese. I haven't used this podcast a lot myself, but what I have seen is pretty good.
This site is a mirror of the original site, which is no longer available.