Thanks to Michael Sauers at the Nebraska Library Commission Blog [1] for pointing out this YouTube Video on what librarians and other educator groups are doing with Second Life:

I recommend this video if you haven't tried Second Life yet. This video downloads a lot faster than SL's 30MB client software. If you're intrigued to investigate on your own, go to Second Life [2] and get your free avatar. You're only cost will be time and a twice monthly railing at required updates.