initial data loading in angularjs

initial data loading in angularjs

When building a web app where every page depends on many data sources,
what's the best way to fetch the initial bits of data? When I look at
twitter, I see the tweets that are visible on page load are in the HTML
source, and more tweets are loaded in using AJAX as you scroll down. But
there's no convenient way to get data that's already in the DOM to be
inserted into the model.
Making a request for the initial data, immediately after page load seams
stupid, because you've just made a lot of roundtrips to the server to
fetch css, html and javascript. Would it be a bad idea to insert the data
into a javascript tag on the page, so a javascript function can add the
initial data?
I'm specifically asking for angularjs, but if there's an general
technique, please let me know as well.