Thanks for posting these -- I have watched part of the first video and have been finding it to be helpful so far. I've learned about some (alleged?) no-nos and have started to go through the (luckily still) small pile of code I'm amassing trying to fix some of these (e.g. don't start identifier names w/ _ because although it's legal, this might cause problems later, and gotchas w/ the return values of && and ||).
, which appears to allude to Douglas Crockford right near its beginning.