Automator is cool, if you find the "Automator actions" you need. There are a few good resources out there, like
www.automator.us.
My dad needed an easy way to export pictures out of iPhoto in a certain size and burn them to CD, and Automator allowed me to do just that without him having to remember the exact steps and settings.
(For image related actions, check out the ones for "Preview".)
-Christian