We hear about MIT Open Courseware from time to time but I was unaware that Yale has a similar (smaller) program. Online Video Lectures and Course Materials — Open Yale Courses
If you go to OCW Consortium, you will be able to access sites for many universities across the country (and across the globe) that have caught the vision of the open courseware movement.
Obviously, no college credit is awarded, but I wonder if completing any of these courses would have any value at all for career advancement.
This a treasure, one can supplement his DL or even campus based classes with first class education lectures OCW.
Here is another source of video lectures and classes Free video lectures, Free Online Courses, Video Lessons, Lecture Videos, Tutorials, free Download from top colleges and universities