I’d previously mentioned that we was looking for a XUL programmer at work. Fortunately, we found someone who - while he didn’t know XUL - knew enough Javascript to be able to pick it up.
I’ve now been able to do a screencast of the project we were working on - a Firefox plugin for checking accessibility for sites which require a login - which is pretty cool if you are a web developer and care about accessibility. More details on my work blog.