Excellent course, clearly explained. I've spent time on building models of things that interest me, in addition to the work required for the course. I'd recommend it for anyone interested in biology, social sciences, or ecology who wants to get beyond hand waving arguments and actually see whether a idea has a chance of working in practice. You are still only dealing with models, but you can at least see whether the model will hand together.
Good forums, with plenty of lively discussion. IMHO this is vital for any course.