There are a lot of great Danish podcasts. I have not heard so many English ones so i am not the right one to answer that question.
In Denmark we have a large state-supported media institution called DR. They make both podcast and regular radio. Any radio program in Denmark is also released as a podcast, more or less.

Some of the news papers also releases podcasts. They have found out that is a great way to reach a young segment but the big problem is still: How do they earn money on their podcasts?

Some of the most popular podcast in Denmark are made by former workers at DR. And yeah, some of them are journalists :)

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