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I believe this is the first time this particular presentation has been available, but if I'm wrong, forgive me. My NCDevCon talk on Practical HTML5 is now available for watching online: Practical HTML5. Along with my talk, you can find many others available on their blog. And by the way - NCDevCon has an open call for presentations. This is a great little conference that I've been privileged to attend a few times. I probably won't make it this year due to prior commitments, but I definitely recommend it.