GD Star Rating
GD Star Rating plugin allows you to set up advanced rating and review system for post types and comments in your blog using single, multi and thumbs ratings.You can set many options for displaying the rating stars, and add widgets into the sidebars for displaying top ratings and other statistics generated by the plugin. Plugin includes advanced settings panels that will allow you to control many aspects of rating. Plugin also supports multi ratings along with thumbs based ratings. Plugin supports use of cache plugins and dynamic loading of data using ajax.