Google has created a multi-week free online course this summer (2011) as a kind of experiment in mass learning. You can read the discussions, view the videos, and use the resources, incluidng a Diigo group, asynchronously, so hop on board!
MERLOT is a free and open resource designed primarily for faculty and students of higher education. The MERLOT Journal of Online Learning and Teaching (JOLT) is a peer-reviewed, open access, online publication addressing the scholarly use of multimedia resources in online education