I found the 'source detection in large networks' slide presentation to be fascinating - I could actually just sit and watch these sorts of slide shows for days on end. Is it a good learning experience, though? Probably only if you're really interested in the subject material. Of course, that's probably true of all learning experiences (I always wonder why people take pains to say MOOCs require motivated students, as though nothing else does). I also wonder why Kevin Jarrent uses images to create his post title - perhaps it's an anti-aggregation device?