Like/Dislike

I need a plugin that lets any user like/dislike a post and display the most liked post on the header of my front page or with a simple link, NOT in the sidebar

can anyone help me? ive tried dozens of plugins but none give me the option to show “most rated/highest rated” links to posts

im using this theme >> http://www.upstartblogger.com/upstart-blogger-wordpress-theme-signal-37

and here is my site http://www.roflquestions.com