jquery-queueEnd.js

//  .queueEnd( [queueName], callback(jQuerySet) )
jQuery.fn.queueEnd = function(type, callback){
    if( !callback ){
        callback = type, type = 'fx';
    }
    
    var i = 0, $this = this;
    return $this.queue(type, function(){
        if( ++i == $this.length ){
            callback.call( $this );
        }
        jQuery.dequeue(this, type);
    });
};

// example ( http://jsfiddle.net/8QLcx/4/ )
// $('#foo').children().fadeOut('slow').queueEnd(function(){
//    console.log('done!');
// });​