Wired Goons Header is a WordPress plugin by wiredgoons that allows you to not only see what’s been loaded in wp_head but allows you to remove it. Default options are set to remove what’s most commonly removed for you.
This avoids the need to hack core wordpress files or your theme/ plugin files, it also explains what options do when enabled.
It lists every option and some of these you may not want to disable, if you make a serious mistake you can remove the plugin from the folder or delete the entry in the options database (wg_wphead_settings)
Download and info; http://wordpress.org/extend/plugins/wired-goons-header/