In Mountain Lion 10.8 an animated smooth scrolling feature has been added to Mac OS X. Return to the pre-Smooth Scrolling functionality with this command:
Change your mouse tracking speed in Mac OS X
If the available settings in the mouse preference panel aren’t good enough for you, You can adjust the tracking speed via OS X Terminal using the following command:
Mac OS X: Disable the creation of .DS_store files
If you access a network share on Windows desktops or server, your Mac leaves .DS_store files wherever you browse. These Mac OS X system files contain data about the directory and are hidden for Mac users. You can deactivate the Writing of .DS_store Files on Networks shares, so your Windows friends will stop complaining.
Disable the extension change warning in OS X Finder
When attempting to change a file extension in OS X Finder a warning dialog will appear. This could be annoying if you know what you’re exactly doing. Turn off the extension change dialog with the following command.
Show hidden files in OS X Finder
Mac OS X Finder does not show hidden (.dot) files and folders. Usually administrator will go in the Terminal and browses those hidden files and folders. This command will display all hidden files and folders.
Show OS X Dashboard Widgets on your Desktop
Enable OS X Dashboard widgets on the desktop, with the F12 or F4 key. After applying the defaults write command activate Dashboard, click on the widget you want to move to your desktop, and while holding the mouse button down, click F12/F4 again.
Disable Apple TV support in iTunes
Disable support for Apple TV within iTunes 7.1 or above. After applying this command the option ‘Apple TV’ will disappear in the navigation bar and the Advanced menu options.