I just registered for the Connectivism and connective knowledge (CCK09) course that’s going to start in September. I first came across it when I did the Mozilla open education course earlier this year and have been keeping an eye on it in the meantime. It’s a massively open online course that so far has 1000+ registered participants, and is hosted by George Siemens and Steven Downes.
From the 2008 course outline, the Connectivism and connective knowledge course is a “…twelve week course that will explore the concepts of connectivism and connective knowledge and explore their application as a framework for theories of teaching and learning. It will outline a connectivist understanding of educational systems of the future.”