A script to run from the console that generates a wget compatible list of downloads of the WWDC2013 releases, categorized by track. You can change PDF to HD or SD to download videos.

generate_wget_wwdc2013.js

(function ($) {
    return $('a').filter(function () {
        return $(this).text() == "PDF";
    }).map(function () {
        var dl_free_name = $(this).attr('href').substring(0, $(this).attr('href').length - 5);
        var ext = dl_free_name.substring(dl_free_name.length - 3);
        var track = $(this).parents('.session').find('.track').text();
        var title = $(this).parents('.session').find('.title').text().replace(/[^a-zA-Z0-9-_ ]+/g, '');
        return 'wget "' + dl_free_name + '" -O "[' + track + '] ' + title + '.' + ext + '"';
    }).toArray().join("\n");
})(jQuery);