Don't-Miss Utility software Stories
Using an AppleScript, create a Service (in 10.6) that will let you toggle the visibility of the sidebar in all open Finder windows. This also works in 10.5, but it's not quite as useful there, as the script can't fully hide the sidebar.
Learn a simple keyboard shortcut to release minimized windows into the active Space, instead of back into their original Space.
In Snow Leopard, text replacement must be enabled on a program by program basis. Use this hint to enable text replacements globally, at least in all programs that support them.
LaunchBar is an application (plus much more) par excellence. But a new feature in LaunchBar 5 has caused a headache for bug-finder Ted Landau.
Learn about some key changes to the Unix 'top' command in Snow Leopard
Learn how to add over 20 additional effects to photos taken in Photo Booth and iChat
Learn a timesaving (but potentially dangerous) method of deleting files stored on networked volumes without going through the Finder's "are you sure?" warning dialog.
Learn how to see a rotating set of icon previews for files within folders in Quick Look mode - perhaps not terribly useful, but visually intriguing
Learn how to change the Expose All Windows sort order, and how to control whether or not Expose searches across Spaces in Application Windows mode.
Data detectors in Mail in 10.5 and 10.6 can help you create new contacts and events from dates, addresses, and phone numbers. Learn how to automatically associate notes with these new entries.
In Snow Leopard, you can use the Recent Items menu to help you quickly find where you saved a recently-used document (or application).
Snow Leopard removed a useful 'download only' option from Software Update. Learn two ways to replace that lost functionality.
Use Terminal to see which processes are using your Internet connection
So, you erased your hard drive. Here's one recommendation for a tool to use to recover it.
Learn how to select any window in Expose's All Windows mode based on the name of that window.