Carbon Copy Cloner uses AppleScript Studio to put an easy to use interface in front of AppleScript. When you launch the program, you choose source and destination disks with pop-up menus, specify which (if any) folders you do not want cloned, decide whether or not to recreate Darwin links and bless the system folder, and then simply hit the "Clone" button. Carbon Copy Cloner then proceeds to create a fully bootable copy of your existing installation.
Carbon Copy Cloner's focus is in cloning an entire drive; it's not targeted at programs like Retrospect that let you create backup sets, incremental backups, etc. But if you just want the security of knowing you have a full bootable backup of your existing installation, or you need to install a customized OS X folder on 100 hard drives, it's a near perfect tool for the job.

