Christian Heilmann describes an approach to building complex web application by basing them around events, particularly around YUI's CustomEvent class.
Christian Heilmann's excellent guide to writing unobtrusive JavaScript. Takes the reader from the inline JavaScript world right through to a clean dynamically attached events with all the JavaScript code in external files. Covers DOM Scripting. This is the key reference to unobtrusive scripting.
Christian Heilmann does a tree menu without using loops. It demonstrates the flexibility and power of Event delegation - catching events at a higher level in the document. It drastically cuts down on the number of events you need to add to a document. One event handler per menu, rather than one per link in the menu.
Christian Heilmann demonstrates delegating events, and compares it to the main alternative of assigning event handlers to each individual node. Its a technique that's important for writing applications that can scale.