Can Garnish be extended to allow plugins to use custom keyboard shortcuts? For example, when editing an entry cmd + s saves the entry. Is there an easy way to extend Garnish to allow for my plugin to listen for custom keyboard shortcuts?
I'm not sure if there's an "official" way yet but I've looked through the source a little bit and I think the most Craft-like way I would do it, following plugin conventions, is to extend Garnish.Base with a new object that attaches the listener. 

(function($) {

        var PluginName_KeyCapture = Garnish.Base.extend({

            init: function()
            {
                this.addListener(Garnish.$doc, 'keydown', function(ev)
                {
                    if ((ev.metaKey || ev.ctrlKey) &amp;&amp; ev.keyCode == 66)
                    {
                        ev.preventDefault();
                        console.log('You hit CTRL + B! Good work.');
                    }
                });
            }
        });

        Craft.PluginName_KeyCapture = new PluginName_KeyCapture();
    })(jQuery);