I don't always agree with all of Crockfords opinions (I don't believe the ++ operator to be harmful for example) but I do think that his lectures are brilliant.<p>In fact, his previous lectures at yahoo somewhere around 2007ish have fundamentally changed how I think about JavaScript: what was bad spaghetti once, became real architecture. What I felt was an ugly language became a cool language with some warts.<p>Crockfords lectures began a long process to convert me from "who needs functional programming" to "why does this method here have side effects?" (a route many programmers are probably taking, but for me was the beginning of the journey)<p>And finally, even if you think that you know all about JS, these lectures are still very entertaining to watch, because, IMHO, Crockford is a brilliant speaker.