Download Coursera videos

videos.js

javascript:(function(){
	$('a.lecture-link').each(function (index){
		var $lectureLink = $(this);
		var videoLink = $lectureLink.attr('href').replace('view','download.mp4');
                var subtitleLink = $lectureLink.attr('href').trim().replace('view','subtitles').replace('lecture_id', 'q') + "_en";
		var videoName = '\"' + (index+1) + '.' + $lectureLink.text().trim() + '.mp4\"';
		var subtitleName = '\"' + (index+1) + '.' + $lectureLink.text().trim() + '.srt\"';
		var cookieHeader = ' --header \"Cookie:'+ document.cookie + '\" ';
		console.log('curl -L' + cookieHeader + videoLink + ' > ' + videoName);
		console.log('curl -L' + cookieHeader + subtitleLink + ' > ' + subtitleName);
	});  
})();

I expanded this code into a bookmarklet.