Angular, A Framework for Web Applications
To quote the description from the HTML5 Developer Conference:
Angular allows you to extend the HTML vocabulary, have proper business-logic / presentation separation through bidirectional data-binding, declarative application assembly through dependency-injection, and testability story like no other framework. Angular is a fundamentally different way of building an AJAX app.
Head to Marakana TechTV HTML5 Dev Conf Page to see all the videos released from this conference.
Check out the HTML5 Developer Conference website for more info.