Plugin to rate a group of posts and order them by rating

so… that:

Plugin to rate a group of posts and order them by rating

I wanna create Rankings with some of my posts (but Ranking is not the best word to describe it around here, regarding the SEO).

so, do you know any way to do this? I don’t wanna do it qith all my post. Just select a few, so users can vote the best, and give that order to that…

Thanks in advance!
W