Or, more accurately, _taught_ about javascript at the ETech conference. And he has very graciously made both “his slides”:http://www.flickr.com/photos/simon/sets/72057594077197868/ and “his notes”:http://simon.incutio.com/slides/2006/etech/javascript/js-reintroduction-notes.html available from his blog.
These are mostly oriented towards people who already know how to program, but haven’t taken JavaScript seriously. I’m definitely in that camp, and I found his notes to be a very clear, consise introduction to some of JS’s more advanced programming features–some of which I’d been exposed to already because of my spelunking around AJAX code, but I’d just been inferring their use rather than knowing exactly what was going on.