Mod to have users rate each others posts

I am thinking about doing something where I need my board users to be able to rate new threads, and have a system where you can view top 5 (or however many you wish), bottom 5, 5 newest posts, etc.

This would be similar to:
http://www.ratemykitten.com/
http://www.ratemymullet.com/
rate my girlfriend... and other not so acceptable sites.

Only differance is they would post a picture and a description / story.

Is this possible in PunBB?
Would there be a simple mod you could do to include this type of thing?

Thanks,