Open Yale Courses
The video is high quality, filmed by university videographers, and tailored to the needs of the course. An article in Inside Higher Ed highlights the importance of displaying the board during a physics course, to show the discussed equations and examples. Transcripts and audio are available, and the video is available in several formats, including high bandwidth downloads.
All the materials are licensed via Creative Commons, so the materials can be reused noncommercially as long as credit is given. Yale has already entered into agreements with the governments of China and India to show the videos on state televisions, and individual faculty at universities in China, India, Mexico, Argentina, and Ethiopa have announced their intentions of including Yale materials in their courses (via the Yale Daily News).
Are you teaching or taking a similar course? These courses, as well as the other Open Courseware courses at other universities, represent a rich source of ideas and supplementary materials for instructors and students. These are wonderful for instructors teaching a new course or updating an old one. Or think of them as guest lecturers who are always available (just not for questions afterward). For students they represent the ability to get another perspective on a topic, and the access to world renowned scholars, without paying world renowned tuition.
And, of course, none of us (at least no one reading this) have an excuse anymore for not being lifelong learners.