gistfile1.js

function processListOfVideos(obj) {
  // My assumption is that $('#listOfVideos') resolves to an unordered list so that I can put things into it
  var ul = $('#listOfVideos');

  $.each(obj.entry, function() {
    var mediaUrl = this['media$group']['media$player'][0].url;
    $('<li/>', { html: mediaUrl }).appendTo(ul);
  });

  // If there are any more videos, load them too
  $.each(obj.link, function() {
    if (this.rel === 'next') {
      $.getJSON(this.rel + '&callback=?', processListOfVideos);
    }
  });
}

$.getJSON("http://gdata.youtube.com/feeds/api/users/Deckswax/uploads?alt=json&callback=?", processListOfVideos);