HTML/XHTML Compatibility Authoring Guidelines
A first bash at describing how to write (X)HTML5 documents that can be parsed as XML as well as HTML.
Link archive: April 21st, 2010
Akihabara
A framework for creating old-school arcade games in the browser, using HTML5.
haroon baig | projects | twitwee clock
A cute hardware hack: send a tweet with the word TwitweeClock, the hashtag #TwitweeClock, or the username @TwitweeClock, and this cuckoo clock will, well, cuckoo.
Design Swap - Spreading camaraderie through good design
An exercise in collaboration and perspective: let another designer touch your website while you touch theirs.
HTML5 Video Destruction
Quite a stunning proof of concept that uses video and canvas.