This module allows you to give a "moderate nodes" permission to a user role. Users with this permission may see a list of content (restricted using the node access table via db_rewrite_sql so they cannot see content they are normally prohibited) at /admin/content_moderator. Within this list they can either approve posts to move them out of moderation, or put them into moderation to remove them from public view (important note: only some modules, including book and poll, check the moderation status before displaying content).