DailyJS: Backbone.js: Hacker's Guide.
I’ve pretty much landed on Backbone.js being my go-to when it comes to my personal ‘new’ JavaScript endeavors. It took me some time to come to the conclusion, which is derived from many articles read (and re-read), conversations had, and podcasts listened to. This article is quite a nice, direct introduction to the basic principles of Backbone, and judging by the comment thread there are more to come about subsequent features. Good stuff!