Sloodle - Second Life meets Moodle
I had my first real look at Second Life earlier this year, and was impressed with the relative ease with which a 3D environment could be created as a context for online interactions etc.
SLoodle is a project to integrate the VLE platform Moodle with the 3D world of Second Life. Imagine a Moodle course that, if you wanted, could turn into a proper 3D interactive classroom with all your Moodle resources available to your students in the virtual world. As their intro says:
Two developer communities have come together to create entirely new teaching tools that motivate while offering hands-on exploration.
I've joined the community to keep an eye on what is happening - looks like one to follow!