Some search engines (including Google and Bing) display a star rating for things like movies and downloads on sites such as IMDB and cnet.
How can I configure my site to provide this data?
Use a Review Microformat. Google has good documentation of what they use, but the full standard for the hReview Microformat should also be looked at, as it offers more properties.
Google lists
itemreviewed
rating
reviewer
dtreviewed
description
summary
Google also gives examples of Individual reviews and Aggregated reviews.
You can use Schema Data, Google Reviews for Item reviewed, rating, reviewer, date, summary & etc.
Schema is allow from different Search Engine because they follow it for Rich Data showing at SERPs.