Crockford's videos up over here: http://developer.yahoo.com/yui/theater/ http://developer.yahoo.com/yui/theater/ are extremely useful, too. A little bit dry, bu

Crockford's videos up over here: http://developer.yahoo.com/yui/theater/ http://developer.yahoo.com/yui/theater/ are extremely useful, too. A little bit dry, but he knows his stuff. It's interesting to point out that, while not optimized for it, Javascript (don't think ruby can do this, since you can't pass blocks to blocks) can perform tail recursion: http://warfangled.com/js_examples/fib.js http://warfangled.com/js_examples/fib.js