[backbonejs] Using jQuery efects backbone

I have a question about the using the jQuery effects in backbone. Basically what I want to achieve: I have a app when after clicking show more question button app load more tasks I want to delay this process for about one sec and add throbber to this while its loading. Second effect which I want to achieve is to add fadeIn() effect after the loading is done and the more tasks are appearing. The code:

$(function() {

var Tasks = Backbone.Model.extend();

var TasksList = Backbone.Collection.extend({

    model: Tasks,

    url: 'json/data.json',



}); 





var TasksView = Backbone.View.extend({



el: '#content',

con: 3,

events: {

    'click #load-more': 'onClickMore',

    'click .avatar': 'avatarClick',

    'click .answer > a': 'answerClick',

    'click .other-questions': 'questionsClick'

},



template: _.template($('#taskTemplate').html()),



initialize: function () {

    this.listenTo(this.collection, 'reset', this.render);

    this.listenTo(this.collection, 'add', this.render);





},

renderTask: function (task) {

    var html;



    html = this.template(task.toJSON());



    this.$el.append(html);

},





render: function () {

    var tasks = this.collection.first(this.con);



    _.each(tasks, this.renderTask, this);



    this.count = tasks.length;

},

onClickMore: function (event) {

    var tasks = this.collection.models.slice(this.count, this.count + this.con);



    event.preventDefault();



    if (tasks.length) {

        _.each(tasks, this.renderTask, this);



        this.count += tasks.length;

    } else {

        alert('Limit of tasks for you is reached');

    }

},

avatarClick: function (event) {

    alert("You clicked avatar!");

    event.preventDefault();

    event.stopPropagation();

},

answerClick: function (event) {

    alert("You clicked answer button!");

    event.preventDefault();

    event.stopPropagation();

},

questionsClick: function (event) {

    alert("You clicked whole task!");

    event.preventDefault();

}



});



var tasks = new TasksList(),   

tasksView = new TasksView({ collection: tasks });

tasks.fetch({ reset:true });



});

So, what's the problem? jQuery is fully available in backbone apps, you can find needed nodes by using this.$('.someSelector') inside your views...  

I`m learning and working on this all day long and my brain is already empty :P I really have no idea how to add for example .show('slow') effect on the onClickMore event :/ and how to enable throbber after the application lunch :(

Basically, just like in any old-school spaghetti jQuery code. Like this:
$(event.target).show('slow');
You can benefit from object-oriented nature of Backbone views and get more nice and organised code with some performance bonus, but basics still works.
I'd like to tell more, but it's night in here.