Lynda.com

My experience with many online courses is that they are very much reading dependent. The majority of the information presented seems to be text based, which is tiring. Everything from the lecture, books, email, chat, discussion areas, newsgroup all require reading words on a screen.

My brother-in-law sent me a link to a website that has a guided tour that (at least for me) serves as a model for how online courses could be presented in a more visual format. It combines visual and audio in a way that engages the viewer. I'm not a strongly visual learner, but found the relief from constant reading to be, well... a relief.
Take a look at it for yourself www.lynda.com