Modules to keep site and content administrators happy

Administration menu (http://drupal.org/project/admin_menu)
Provides a dropdown menu to most administrative tasks and other common destinations (to users with the proper permissions).(This functionality is part of core in Drupal 7.)
Advanced Help (http://drupal.org/project/advanced_help)
Allows advanced help and documentation. Many contributed modules' help and documentation are primarily available through this module.
Views Bulk Operations (http://drupal.org/project/views_bulk_operations)
Requires Views.
Exposes new Views style 'Bulk Operations' for selecting multiple nodes and performing actions on them.
Poormanscron (http://drupal.org/project/poormanscron)
Makes sure cron.php is run regularly, which is necessary to take care of various background maintenance tasks.(This functionality is part of core in Drupal 7.)