Yeap - people often harp about wanting a place where users can figure out what's the best plugin to use and so on, hopefully this can kick off some more involvement from users to contribute in some small part by helping others become aware of plugins to use, and plugins to avoid.
Just as some guidance, you may wish to start with plugins you are familiar with and already use. What do you like about the plugin? What would like to add to the plugin to make it more feature rich? Easy it easy to install and configure?
There's no other resouce for something like this, and shadow has kindly offered one. I will hopefully be writing about two to three reviews a week should time permit, but the more people writing the better the resource we have in helping WordPress users and the community in supporting and using plugins that help to improve the blogging experience rather than make it a nightmare.