My take on retrieving YouTube JSON feed by CommonJS module for Ti Mobile, remains work in progress.

fetchYouTubeJSON.js

// To call, use this statement in app.js:
// require('fetchYouTubeJSON').fetchJSONData('https://gdata.youtube.com/feeds/api/users/...');
// fires app-level event to return data, use to populate TableView or similar
//
// maybe add some cache features?  http://pastie.org/1541768
// http://pastebin.com/Eq1DLsdP
// once again, ripping from the talented @skypanther

exports.fetchYouTubeData = function(url) {
	// Pulls the JSON feed data and returns it to caller
	var xhr = Titanium.Network.createHTTPClient();
	// default JSON feed url
	url = (url) ? url : "https://gdata.youtube.com/feeds/api/users/NATOACT/uploads?alt=json&v=2&max-results=10";
	xhr.open('GET',url);
	xhr.setRequestHeader('User-Agent', 'mobile agent')
	xhr.send();
	
	xhr.onload = function() {
		// Data is returned as JSON, start parsing
		Ti.API.info('Got data!');

		var jsonObject = JSON.parse(this.responseText);
		Ti.API.info('length: '+jsonObject.feed.entry.length);
		
		var data = [];

		// begin looping through videos
		for (var i = 0; i < jsonObject.feed.entry.length; i++) {  
			var idArray = jsonObject.feed.entry[i].id.$t.split('video:');
			var movieId = idArray[1];
			data.push({
				videoTitle: jsonObject.feed.entry[i].title.$t, //video title
				videoLink: "http://www.youtube.com/embed/" + movieId+ "?av=1&autoplay=1", 
		    });
 
		} 
		/*
		for (var i = 0; i<data.length; i++) {
			Ti.API.info(data[i].postTitle);	
		}  */
		 
		// fire an app-level event to notify the UI that the JSON data is available
		Ti.App.fireEvent('net:youTubeDataReturned',{
			feedTitle: jsonObject.feed.title.$t,
			dateUpdated: jsonObject.feed.updated.$t,
			blogPosts: data
		});
	};
	xhr.onerror = function(e) {
		// should do something more robust
		Titanium.API.info(e.error);
	};
}; // end getJSONData()