Read this: http://www.osnews.com/story/23411/Apple_s_HTML5_Showcase_Isn_t_HTML5_Blocks_Other_Browsers
Apple claims to showcase HTML 5 but this showcase is the HTML 5 that only Safari can perform. It block the Firefox 3.5 browser I used to access it. Why doesn't it allow other browsers to take the test ? Isn't it purely not being open and fair to other browsers ? Oh well, Apple has been known to be unfair and close anyway even though it did contribute in open source projects, it did it for it's own gains in the end.
Below is the screenshot of my Firefox 3.5 browser trying to access the HTML 5 showcase page. It's highly misleading.