From Raj's blog

The North American book tour is winding down, and I’ve had many more invitations to speak than I’ve been able to accept. But that’s okay. In the course of a couple of months, I’ve had the opportunity to hone my presentation a little and one of my favourite events was at the Town Hall in Seattle on January 18th, 2010, Martin Luther King Day. Thanks to Ed Mays (who has a version of this talk as a Windows file), you can watch it below, all 70 minutes of it. It’s a more environmentally sustainable way of doing things than my flying around. And, yes, it’s free.

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Listen to the talk - it's excellent