We love drush here - and this is a great little tutorial on how to use the newest drush 3 features effectively.
Lullabot: New features in Drush 3 - It just keeps getting better. Seriously. So… Drush. Are you using it yet? If not get drushing!—or whatever you call it. If you're not familiar with it, Drush is a command line interface for Drupal sites. It's the bees knees, if you ask me. You can use it to enable/disable modules, run update.php, get a SQL dump of your site, and all sorts of other magically delicious things.
The problem is, it just keeps getting better. I almost can't keep up with it! The recent release of Drush 3 includes all sorts of goodies, and every day I seem to find more and more. I'm going to take a quick look at a few of them that I'm most excited about.