I like the Freakonomics guys. I had to read their book for one of my classes and that made me become interested in their blog. Instead of trying to develop theories and finding data to fit it, to me it seems they start with the data and a question and then try to figure out the underlying cause(s). They have had some interesting guests on their site recently offering insight into the financial mess.
And an update as well:
http://freakonomics.blogs.nytimes.com/2008/10/15/everything-you-need-to-know-about-the-financial-crisis-a-guest-post-by-diamond-and-kashyap/
Alot of what is going on right now is complicated because of the interdependencies of the system. Sometimes it all seems like a run of dominoes and we are just trying to stay ahead of the fall.