In case some of you haven't been paying attention, HTML5 is crazy-powerful. An instance of what can be done with it was displayed on the iPhone when Apple protested Google putting GTalk on the phone... so Google just wrote an HTML5 instance of the application and ran it through the iPhone browser.
What's even more impressive than that? WebGL and this example of Quake II running IN A BROWSER.
http://googlewebtoolkit.blogspot.com/2010/04/look-ma-no-plugin.html
To quote Jay from Jay & Silent Bob Strike Back, "I think I just filled the cup."
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