Massive Open Online Courses
In the past few years, there has been a significant boom in MOOCs (Massive Open Online Courses). These are free online courses, sometimes from the most prestigious institutions in the world, with materials, power points, and assessments. Some observers believe that they will have a drastic impact on higher education generally. At any rate, there is a lot of material out there already that may be of interest to instructors. Some examples of MOOCS:
Carnegie Mellon's Open Learning Initiative -- so far only a logic courses is available.
Coursera -- a consortium of Princeton, Penn, Stanford, and University of Michigan. No philosophy courses are available on this yet, but stay tuned.
The Academic Room - appears to be a clearing house of other sources, with some material on philosophy.
Update: 17 Dec. 2015