Cancel Printer Jobs is a free and easy to use AppleScript that quickly and quietly cancels all pending jobs in the printer queue.
Cancel Printer Jobs is a great script to keep handy on a keyboard shortcut for when you accidentally start a long printer job you didn't mean to start!
Unfortunately, this functionality is not exposed by the Apple Printer Utility's AppleScript dictionary, but can be easily manipulated through the command line tools included as part of Apple's CUPS printer support.
Suggested keyboard shortcut: Global Cmd-Ctrl-P.