S5 with CSS Slide Transitions in WebKit: Very cool use of WebKit - CSS transitions and animations to create a browser ready presentation. The presentation plays perfectly in Google Chrome! Once again proving the value of the widely deployed WebKit layout engine.
When building out a site designed specifically for the iPhone, your hands are no longer tied with the typical browser constraints (IE). Mobile Safari -- the browser used by the iPhone -- supports CSS3, 24-bit tranparent PNGs, and custom CSS animations.
HTML 5 represents the biggest leap forward in web standards in almost a decade. Unlike the specifications that came before it, HTML 5 is not merely intended to present content to a web browser. Its goal is to bring the web into maturity as a full-fledged application platform - a level playing field where video, sound, images, animations, and full interactivity with your computer are all standardized. And it may be a long way off still, but elements of HTML 5 are already reshaping the way we use the web.
"...some browsers and plug-ins were adopting storage-related API's that are a part of the new HTML5 draft specification. While Gears, Opera and Webkit have implemented structured storage API's, the remainder of the HTML5 spec currently remains mostly unimplemented and also in a state of flux. HTML5 is a super-sized effort to bring all the browsers under a single, standard markup language and set of API's - but with Microsoft, Adobe and others racing ahead with their own next-gen web technologies, will we ever see a real HTML5 standard?"
This article was posted in August of 2008, before the surprise release of the WebKit based "Google Chrome" .... the WebKit RiA alternative to Adobe AiR and Microsoft Silverlight
I reformatted my response to marbux concerning HTML5 and web application lack of interoperability. The original article these comments were posted to is titled, "Siding with HTML over XHTML, My Decision to Switch.... ".