Crockford on JavaScript: A Public Lecture Series at Yahoo!.
If you’re at all interested in JavaScript you owe it to yourself to download and review the materials here. Douglas Crockford is someone I have an immense respect for and consider one of if not my single-most ideal learning sources for JavaScript.
Yahoo! has taken the time to bring an entire series of lectures by Crockford into a single location for our digestion, I sincerely encourage you to check it all out.