My lecture at Scipy Conference 2011 is already available on-line in video, so you can watch me now presenting about our work at Muricoca Labs called "Crab - A Python Framework for Building Recommender Engines" . It is a work that I am developing with some machine learning developers as an alternative for python developers that want to work with recommender engines writing Python code.
Further information , it may be found here at the official home project. About my experience at Scipy, you can find at this post.
Here the link for the video,