Paul Krugman

This is the blog I never miss, I read it every single day. Inspiring thoughts, deep knowledge of economics and today problems and transmission of this knowledge with a few words.
http://krugman.blogs.nytimes.com/

Paul Krugman published a very good book last year with the same title.

Two more nice blogs : http://fistfulofeuros.net/ is about european countries and their problems, and http://blogs.lexpress.fr/attali/ , Jacques Attali's thoughts and comments (in french).