From Web2.0 Expo HTML5 Session
Read disclaimer. View in Chrome.
Apart from video/audio tags already deployed on a lot of major webpages for iPad compat, some stuff that shows a real start at challenging/replacing Flash:
Slide 23,24: iPhone/iPad style canvas and photo manipulator with scaling, rotation, translation
Slide 40: Easing and transitions
Slide 41: Transforms on elements and page. Rotating and zooming, translation
The file-system stuff and drag-drop is also cool as shit. The fact the whole page/preso is single load is also cool as shit from standpoint of webapp potential.