I do want to comment, however, on this tidbit from one of polly mer's posts:
This situation is hit and miss. Many times online classes don't have lectures akin to classroom lectures.
Given the course I teach (accounting, highly computational), I can't imagine not having lectures available online for an online course. Furthermore, given the math problem nature of my field, I can't imagine not having problems demonstrated online for an online course. I have spent and am still spending huge amounts of time creating these lectures (voice over powerpoint in my case) and demonstrations (mostly using a tablet PC with voice over OneNote, more or less, but a few using Excel (because the tablet died)).
I just finished a semester of hybrid teaching without online lectures (readings, activities, quizzes, movie clips, and other things, but no lectures) and looking at examples of online/hybrid classes from colleagues, examples from my how-to-teach-online class, and other examples from open-university places.
I refused to teach a completely online class this semester because I couldn't see a way around doing all the lectures in some sort of taped format for this particular class and I would not be getting paid enough to do that for the time required. However, yes, I have seen lots of examples of classes I would love to take or teach where lectures akin to classroom lectures were not present. Instead, the classes were much more like traditional correspondence courses: do this reading, try these activities, check yourself, and then send a test/quiz/lab report to the professor for grading. Repeat through the entire course pack.