Found this via Xbiz...
http://review-script.com/
This Amazon-style php review script allows users to rank a product or item on a scale of 1-5 stars and make comments related to the product for other users to read.
Email notification will allow the administrator to approve comments before being added to the website. Admin panel allows the following: Approve a Review before it is listed, Delete a Review, Delete all Unapproved Reviews and Add Item for Review.
Can be used to rate books, videos, music, websites....the sky's the limit! Fast mysql backend. One template file controls the entire site/script layout.