Here is the Apple keynote by Steve Jobs at the WWDC, Worldwide Developers Conference from the Moscone Center in San Francisco, US available in QuickTime.
With a few self promos at the beginning, Steve Jobs later comments on the transition from the Computer Centric and User Centric direction of the new Finder and Expose in the forthcoming Apple OS X 10.3 Panther Operating System, released in Australia in September.