SimpleFit.org

Kevin McKay, a member of the CrossFit and Performance Menu forums, has put together a nice resource for the beginner. He explains the basic concepts of using short, intense workouts and has put together an 8-level bodyweight-only program (so no excuses!). He also touches briefly on nutrition, espousing much of the same values that I do, namely a focus on meat, vegetables, nuts, oils, and fruits. Kevin also provides a sample menu that can make the transition much easier.

The only thing I don't like about the site is that he provides abstracts of research articles that the common layperson cannot understand and provides none of his own comments to explain them. Since the site is aimed at the beginner, it would be prudent to not scare the beginners away with scientific mumbo-jumbo. Regardless, you can skip the articles that explain "why" and just stick to the rest of the site that explains "what and how" and get just as much from it. So check out SimpleFit if you're just beginning or know someone that can use a "bare bones" approach without delving into the nitty-gritty too much.