This isn't a new project -- I first discovered and used it on a social video app I helped build for a startup last summer. That said, it's well-written and the de facto standard for integrating facebook authentication (though it supports many other backends) in Django apps. Recommended!
I upvoted this because, a few months ago, I had a hell of a time sifting through the sheer number of similar, but inoperable/poorly documented Django backends. In the end, I rolled my own, but I wish I had known about this project.