Finer Things in Mac

The Spaces overview lets you enter All-Windows Exposé mode. You can enter Exposé, then invoke Spaces, or invoke Spaces and then enter Exposé.  Either way, you’ll be able to see all your windows.
If you grab a window in this Spaces+Exposé mode and move it to a different Space, there’s another treat: the window will retain its [...]

As of at least 10.5 Leopard, Finder can display an application’s version number when selected in Column view. This is handy if you need to check or compare versions of apps without opening them.
I noticed that it doesn’t do it for all apps – I’m guessing the version number needs to be properly coded into the [...]

If you have a folder that is named “Round 1”, and you Option + Drag/Drop to duplicate it, the new folder will automatically be named “Round 2”.  Do it again and you’ll have “Round 3”.
Editor’s note: Can anyone test this in pre-Snow-Leopard versions of Mac OS X? I’m not sure whether this is exclusive to [...]

If you click the dropdown menu next to a phone number in Mail, you can not only make a contact from it, you can also have it fill the screen by selecting “Large Type”.

This is useful if you need to call said number but won’t be right next to your Mac to do it.

So I finish my work for the night and walk from my desk to my bed.  I climb under the blankets, hook my iPhone up to the charger on my bedside table, flip off the lights, and settle in.  By the time I’m ready to go, my Mac has turned down the backlight and switched [...]

The menu bar helper icons for displays and and computer-to-computer Airport network appear to be a G4 era Apple Display and an original iMac, respectively. I wonder how long these have been there, and when, if ever they will be changed to reflect more modern Apple hardware.
Update: Investigative commenter mkuron discovered that the Airport networking [...]

The default setting for where Mail stores attachments when you open them direct from a message or when you click the ‘Save’ button is ~/Library/Mail Downloads.
At least since Leopard, there’s been a setting where you could pick another folder as the default destination, but judging from personal experience and extensive Googling, many people experienced an [...]

When duplicating a folder or file in Finder, it automatically selects the duplicated file or folder for you, and not the original file as it would in Windows.

In Snow Leopard, when you have multiple displays and Exposé all windows, you will only see windows open on the current display. In Leopard it would move all the windows together onto the main display.

A much easier way to prepare files for uploading through your browser.