Not sure if this will be of any use to anyone but I created (or rather hacked existing plugins) to create a plugin called Show High Low Posts which is available at
Essentially I needed a plugin to show random posts, this already existed, needed some tweaking for my own usage.
Next I wanted to show high and low posts based upon the votes for the posts as well as random posts.
I therefore did some hacking to produce this plugin, full description / instructions given.
Hope it proves useful to some people.