Here's an interesting article, from the Monster.com technology section, about the market for multimedia/e-learning skills.
The url on 7/23/04 was http://technology.monster.com/articles/spotelearn/Index.asp
Here's a link to a copy of the article in my local archive:
The writer, one of Monster.com's technology jobs experts, indicates that the market for e-learning products and skills is mostly entrepeneurial at this point, with opportunities for people who understand both education and technology.