I don't know if this has been discussed before, but Stanford is offering several of their courses in a free non-credit online format. I am currently taking their cryptography class. So far, I have an 90 average grade. It is rather challenging, which is consistent with their claim that the content is the same as their on-campus credit courses. I'm curious if any other BAUTer's are taking the class, and if so, which one(s).