I'm now most of the way through the Intermediate course in Virtual Librarianship I'm doing with the University of Illinois. (Does this mean I'm virtually a virtual librarian?)
It uses Moodle and Second Life for course delivery as well as them being the subject of the course, which makes it an interesting double level of learning. I've found myself behaving in a very 'studentish' way at times. Last week I popped into Moodle at the last possible minute to do a quick stab at the previous week's questions before the next class!
What I found really interesting is the effect of having my avatar present with other avatars in a virtual environment for the two hour weekly classes. There have been some weeks when the subject matter was not of the greatest interest to me personally, but I would have found it surprisingly hard to just wander (or indeed teleport) out of the class once I was 'there'. Almost as hard as it would be to do so in a face to face class. Quite different from logging in briefly to add a few comments to a discussion forum on Moodle.