News in Levels

Here's an incredible site: News in Levels.  According to Richard Byrnes' blog, Free Technology for Teachers, News in Levels includes a story "available in three versions so that you can choose the version that is appropriate for your students. The stories include a list of potentially difficult words along with definitions of those words. Each story is also accompanied by a video."  I've used a feww different sites to match students reading levels to text but this site is the first I've seen to level the same article.  Are there anymore sites like News in Levels?