10:19 am
Demo — showing how to construct a UI in Interface Builder. Creating a basic Cocoa Touch application called Nearby Friends.

10:20 am
Uses the built-in Address Book API to access contacts as well as the Core Location API. The application will show contacts within a 10 mile radius.

10:21 am
He is displaying how easy it is to create a UI by dragging in interface elements and combining them.

10:23 am
Interface Builder keeps the orientation of the iPhone in mind and rearranges the controls appropriately. He is now displaying the app through the simulator, which now has the appropriate UI.

10:24 am
He hooked up the controls to the API and redisplayed it in the simulator showing off the functionality. The application was then loaded onto his actual iPhone, where he is showing how it actually works on the phone. Within 10 minutes, he had created this fully functional, location-based application.
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =

Sure it was cool :)