We're still learning more and more tricks and tweaks in Apple's latest operating system for Macs.
Here are our favorites from this list by Addictive Tips and some of our own.
Instantly look up a word in the dictionary
If you tap a word with three fingers inside of any app, Mountain Lion will pop open a Dictionary window and define that word.
Quickly switch between full screen apps
Swipe side-to-side with three fingers to toggle between full screen apps.
Play chess over Game Center
The Mac's timeless Chess app has been updated to support online play over Game Center. While logged in to Game Center, start a new game and select "Game Center Match" from the Players menu.
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