Download here: http://drupal.org/project/tac_lite

Summary

This module restricts access so that some users may view content that is hidden from others. A simple scheme based on taxonomy, roles and users controls which content is hidden.

Thoughts

Simple and effective.  The module provides a good method to restricting access to content classified by taxonomy.  Using the "Access Control by Taxonomy" admin menu you can create a scheme and then the Taxonomy Vocabulary to use to control access.  Then in the scheme you can define view/update/delete permissions to nodes and select the roles they are applicable to.  You can also edit a user to grant that scheme's access properties to only a specific user.