Jonathan's presentation provided great examples of some awesome sites and design companies that are using ExpressionEngine. He then gave an excellent walkthrough of the features and power of this designer-friendly CMS.
The major takeaway from his presentation is that he and Nate are "not programmers" and that you don't have to be to learn and utilize ExpressionEngine. It is built to work within your code to add functionality and deliver content dynamically.
Clipping is a handy way to collect important slides you want to go back to later.