I've tried out a few of the popular HTML5 frameworks . . . and Phaser is my current favorite.
Gabe Hollombe gives a 20 minute talk.
"A 20 minute conference talk isn't enough time to show off everything, but my hope is to give you a tour of Phaser's features that you're most likely to care about if you're interested in making games with JS. I want to leave you with enough familiarity that you'll feel comfortable starting your first game, and excited by the possibilities."