an event aggregator in Backbone:

var vent = _.extend({}, Backbone.Events);

done.

see also http://lostechies.com/derickbailey/2011/07/19/references-rou... for more info on using it, and http://lostechies.com/derickbailey/2011/11/17/introduction-t... for more info on creating larger apps w/ backbone