Remove WordPress admin menu items

admin_menu.php

<?php
function remove_menus () {
    global $menu;
    // Any menu named below will be removed from the admin sidebar
    $restricted = array(
        __('Dashboard'),
        __('Posts'),
        __('Media'),
        __('Links'),
        __('Pages'),
        __('Appearance'),
        __('Tools'),
        __('Users'),
        __('Settings'),
        __('Comments'),
        __('Plugins')
    );

    end($menu);
    while (prev($menu)) {
        $value = explode(' ',$menu[key($menu)][0]);
        if (in_array($value[0] != NULL ? $value[0] : "", $restricted)) {
            unset($menu[key($menu)]);
        }
    }
}
add_action('admin_head', 'remove_menus');

Surprisingly, it works great.