High Fidelity virtual world now has the ability to record non-player characters (NPCs) in a virtual world. You can now capture your actions in-world and play back your avatar’s actions on a separate model. This ability is very useful for educationalists, teachers and lecturers who can use it to leave a legacy of live lessons and lectures.
This function combined with the high concurrent user rate on servers (currently tested with 110 avatars) opens up possibilities for a functional teaching experience on par with face-to-face teaching.
This is something that doesn't work very well in Second Life. I look forward to developing teaching spaces in High Fidelity and using this with students in Virtual Reality. Here's a tutorial: Create an NPC with Your Avatar and a Recorder Script
Check out Liv Erickson's blog post on Recording Yourself as an NPC