Two architecture videos. One I shot, of Digipede. They have a system that builds grid architectures for .NET developers. Useful for big corporations who need to do a lot of processing and can’t get the power they need just by adding a quad-core processor to their machines. A more complete interview and demo are over on ScobleShow.
Another is a cool video of Josh Eikenberry doing rapid architecture prototyping in Second Life. He basically built a whole building complex right in front of you (it took him a week, you can watch in a few minutes).