steve.barnett

Flexible hReview lets you add an <a href="http://microformats.org/wiki/hreview" rel="nofollow ugc">hReview</a> to a Post, then show that review anywhere on your site using the function or the shortcode. 
Also available on GitHub: <a href="https://github.com/SteveBarnett/Flexible-hReview" rel="nofollow ugc">https://github.com/SteveBarnett/Flexible-hReview</a>.
The options page lets you set:
<ul>
<li>field names for multi-dimensional reviews</li>
<li>the maximum rating</li>
<li>whether or not to calculate and display an average of the ratings</li>
<li>characters for before and after the rating text</li>
</ul>

Flexible hReview

Easily add hReview data to a Post. Show it anywhere using the function or the shortcode.

andrewescott

This is a plugin to allow the easy entry of microformat content for reviews (i.e. the hReview microformat) in WordPress pages and posts. It adds a button to the editor that pops up a form with basic review fields, then inserts the contents of the fields back into the editor using markup compatible with hReview.

hReview Support for Editor

This is a plugin to allow the easy entry of microformat content for reviews (i.e. the hReview microformat) in WordPress pages and posts.

Flexible hReview vs hReview Support for Editor