AIGA recently put up a great case study on the redesigned NPR.org website. Take a look at the full article, as well as additional views of the site's UX process and before & after shots: http://www.aiga.org/content.cfm/case-study-npr-org
Editor's note: On July 27, 2009, National Public Radio (NPR) relaunched the website www.npr.org through the efforts of its in-house design team and interactive agency Schematic. The case study was written at AIGA's request and coordinated by Sarah Zimmerman. Please contact the editor if you would also like to provide a case study.