Christian Heilmann compares the Object Literal to Douglas Crockford's Module pattern and finds that the Module pattern fixes a major problem of the object literal - the difficult choice of using this or fully qualified references to functions in the same block. Christian also covers the improvements in the Module Pattern, like the decluttering of the return block, which makes the resulting a little easier to work with.
Christian Heilmann describes an approach to building complex web application by basing them around events, particularly around YUI's CustomEvent class.
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.