Last night I went to the Los Angeles Drupal user group meeting (groups.drupal.org/la).

John Delacruz gave a presentation on "The Power of Drush!" Drush is a powerful module+software combo, bringing amazing power to administrators, maintainers, webmasters, and Drupal developers. Imagine installing modules and updating Drupal in fractions of a second, not minutes or hours. You can read more on Drush here: http://drupal.org/project/drush.

Here is a sample command that you can use to install a module:
drush pm install admin_menu
This command will perform the following tasks:

• Determine the version of Drupal you're running
• Download the latest STABLE version of the admin_menu module directly from the CVS repository
• install the module for you

There are many more cool features that will save a developer time. This goes on the must have list for Drupal Modules. This will definitely change the way that I work on Drupal projects!

-Chris