Having passed the 70-486 exam, I decided I wanted to try something different before I tackled the last cert test, so I poked around MIT OpenCourseware, Coursera, and edX looking for something interesting. I decided that it was about time to try the AI class. MIT and edX both had similar offerings, and I went with edX since it offered the autograded exercises (and I already owned the recommended book).
Artificial Intelligence on edX (Lectures) (AI Homepage)
Artificial Intelligence: A Modern Approach
Supplemental:
Artificial Intelligence on MIT Open Courseware (Course website)
Artificial Intelligence from NPTEL
Machine Learning from University of British Columbia
