function MyApp(){
  var router = new MyRouter();
  var myCollection = new MyCollection();
  var someView = new SomeView({collection: myCollection});

  this.start = function(initialModels){
    myCollection.reset(initialModels);
    someView.render();
    Backbone.history.start();
  }
}

var someModels = [...];

new MyApp().start(someModels);