Useful plugins found in my travels...

plugins.js

// Array Remove - By John Resig (MIT Licensed)
Array.prototype.remove = function(from, to) {
  var rest = this.slice((to || from) + 1 || this.length);
  this.length = from < 0 ? this.length + from : from;
  return this.push.apply(this, rest);
};

// usage: log('inside coolFunc', this, arguments);
// paulirish.com/2009/log-a-lightweight-wrapper-for-consolelog/
window.log = function(){
  log.history = log.history || [];   // store logs to an array for reference
  log.history.push(arguments);
  if(this.console) {
    arguments.callee = arguments.callee.caller;
    var newarr = [].slice.call(arguments);
    (typeof console.log === 'object' ? log.apply.call(console.log, console, newarr) : console.log.apply(console, newarr));
  }
};

// make it safe to use console.log always
(function(b){function c(){}for(var d="assert,count,debug,dir,dirxml,error,exception,group,groupCollapsed,groupEnd,info,log,timeStamp,profile,profileEnd,time,timeEnd,trace,warn".split(","),a;a=d.pop();){b[a]=b[a]||c}})((function(){try
{console.log();return window.console;}catch(err){return window.console={};}})());

/*
 * $.inJSON utility
 *
 * Searches arbitrary JSON for a key and returns an array of all matches.
 * Intended for use with jQuery 1.4.2
 *
 * Copyright (c) 2010 Dan Connor
 * www.danconnor.com
 *
 * Dual-licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
*/
(function($, undefined){
	$.extend($, {
	    inJSON: function(json, key){
	        var hit, hits = [];
	        $.each(json, function(k,v){
	            if (k === key)
	                hits.push(v);
	            if (typeof(v) === "string"){
	                return true;
	            } else if ($.isArray(v) || $.isPlainObject(v)) {
	                var r = $.inJSON(v, key);
	                if (r.length > 0)
	                    hits = hits.concat(r);
	            }
	        });
	        return hits;
	    }
	});
}(jQuery));