Google Analytics API, How To Develop With Analytics.

Google Analytics have been very helpful to webmasters, marketeers and generally everyone. But what we do day to day with Google Analytics is tip of the ice berg. There are much more hidden under the skin and Google  coming forth with information and steps needed by developers need to take, in order to retrieve data from Google Analytics: Authentication, Account Query, and Profile/Report Query.
Once you watch the video, there is a link for samples of javascript to play with Google Analytics via the API.

 interactive javascript examples for Google Analytics API