A good starting place for a static class-based WordPress plugin

wp_plugin_stub.php

<?php

/*
Plugin Name: A Plugin Name
Plugin URI: http://somadesign.ca/
Description: Be descriptive.
Version: 0.1
Author: Soma Design
Author URI: http://somadesign.ca/ 
License: GPL v2
*/

/**
 * Copyright (c) 2012 Soma Design. All rights reserved.
 *
 * Released under the GPL v2 license
 * http://www.opensource.org/licenses/gpl-2.0.php
 *
 * This is an add-on for WordPress
 * http://wordpress.org/
 *
 * **********************************************************************
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * **********************************************************************
 */

register_activation_hook(__FILE__, array('PLUGIN_CLASS_NAME', 'activate') );
register_deactivation_hook(__FILE__, array('PLUGIN_CLASS_NAME', 'deactivate') );

class PLUGIN_CLASS_NAME {
	
	/* VARS AND CONSTANTS */
	private static $url = '';
	private static $dir = '';
	
	/* INIT */
	public static function init() {
		/* These are filtered so that plugins can optionally be moved into themes */
		self::$url = apply_filters( __CLASS__.'_url', plugins_url('/', __FILE__), __FILE__ );
		self::$dir = apply_filters( __CLASS__.'_dir', plugin_dir_path(__FILE__), __FILE__ );
		
		self::load();
		self::add_actions();
		self::add_filters();
	}
	
	/**
	 * Load components/3rd-party libraries
	 */
	protected static function load() {
		
	}
	
	protected static function add_actions() {
		
	}
	
	protected static function add_filters() {
		
	}
	
	/* DE/ACTIVATE */
	public static function activate() {

	}
	
	public static function deactivate() {

	}
	
	/* CALLBACKS */

	
	/* PUBLIC METHODS */

	
	/* INTERNAL METHODS */


}
add_action( 'init', array('PLUGIN_CLASS_NAME', 'init') );