These videos come from the event Getting to Node.js Nirvana held at Microsoft on April 12, 2012. The event had 250 attendees, featured four great speakers, and focused heavily on Node.js examples, hands on code demos, best practices, and useful libraries.
This event was organized by Marakana and Microsoft in conjunction with several Bay Area user groups: SF PHP, SF Java, SF HTML5, Bay Area Azure, and Bay Area Software Engineers.