Javascript is the future of web programming. I came across these videos on hacker news and really think this should be out there in a concise blog post (instead of as a Q&A on stackoverflow.com).
The following are all download links for m4v version of Mr. Crockford's lectures on Javascript.
The JavaScript Programming Language
Douglas Crockford: "The JavaScript Programming Language" (1 of 4)
Douglas Crockford: "The JavaScript Programming Language" (2 of 4)
Douglas Crockford: "The JavaScript Programming Language" (3 of 4)
Douglas Crockford: "The JavaScript Programming Language" (4 of 4)
An Inconvenient API: The Theory of the DOM
Douglas Crockford: "Theory of the DOM" (1 of 3)
Douglas Crockford: "Theory of the DOM" (2 of 3)
Douglas Crockford: "Theory of the DOM" (3 of 3)
Advanced JavaScript
Douglas Crockford: "Advanced JavaScript" (1 of 3)
Douglas Crockford: "Advanced JavaScript" (2 of 3)
Douglas Crockford: "Advanced JavaScript" (3 of 3)
The following links are to streaming videos that are really a more concise version of the lectures above. As a side note Mr. Crockford has his own page on these lectures located here.
Crockford on Javascript
Chapter 2: And Then There Was JavaScript
Act III: Function the Ultimate
Episode IV: The Metamorphosis of Ajax
Happy Javascript Hacking.