If you don’t like the new notification center feature in Mac OS X 10.8, you can disable it (for all users on system level) with the following defaults write command.
Mac OS X General
Increase the speed of OS X dialogs boxes
Mac OS X has dialog boxes that are displayed as an animated panel (named ‘sheets’) that emerges from the window’s title bar. The most popular sheet would be the ‘Save As’-box. It is possible to speed up the ‘sheet’ animation in the native Mac (Cocoa) applications.
Activate element inspector in the Mac App store
In the Mac App Store is a hidden element inspector available that lets you view the source of any page or element. It is possible to extract text or images, and adding your own code through the console option.
Enable momentum scrolling for Magic Mouse
The Mouse System Preferences pane does not include an option to enable momentum scrolling. The setting is a hidden preference. Use following command in Terminal to enable momentum scrolling.
Disable the Spaces Animation in Mac OS X
Anytime you navigate between Spaces in OS X there’s a animation, this is nice but it makes switching between Spaces slower. You can disable the animation with the following command:
Display the location path of current wallpaper in OS X
When you have no idea where the original wallpaper image is stored from your background, you can use the following command to display the full path to the currently active desktop image. This would be display directly on the wallpaper itself.
Enable auto accept of incoming FaceTime calls
You can use your ac as a security camera and watching live video straight from the iPhone, iPod touch, iPad or Mac. Enter the following command to automatically accept incoming FaceTime calls on your Mac. defaults write com.apple.FaceTime AutoAcceptInvites -bool true Setup a FaceTime call your Mac and automatically the video feed will be show up. Disable auto accept with defaults write com.apple.FaceTime AutoAcceptInvites -bool false