I found this topic at another forum and thought it was a great idea so I'm copying it here and am reposting my reply.
$this->handle_bbcode_img_match('http://upload.wikimedia.org/wikipedia/en/b/b5/Unknownpleasures.jpg')
$this->handle_bbcode_img_match('http://news.figment.cc/wp-content/uploads/2009/04/new_order_power_corruption_and_lies-300x300.jpg')
$this->handle_bbcode_img_match('http://ryanlb.com/mp3/no-playing/Technique.jpg')
$this->handle_bbcode_img_match('http://upload.wikimedia.org/wikipedia/en/2/20/Hot-Fuss.jpg')
$this->handle_bbcode_img_match('http://4.bp.blogspot.com/_rAx9SOMx_qQ/SyaJplFxE1I/AAAAAAAADo4/SzVTjKWm4vE/s400/Arcade_fire_Funeral-2004.jpg')