Winds of change has lots on North Korea. He usually does, as well as information on much of the world. His link list (to the right and down) is well organized by topic, and in some cases region. His post today has a link to a site dedicated to discussing North Korean Diplomatic efforts. Also he talks about how the latest 6 way talks went over in China, a post from the LA Times about more defector testimony, and his own archived posts that he likes to call "Dispatches from Hell."
Here's a web site totally devoted to human rights issues in North Korea.