One of the first tweaks you are going to want to make to Mountain Lion is to enable the keyboard shortcut for Notification Center. Go into keyboard in the system preferences menu and hit keyboard shortcuts. From here simply tick the Notification Center shortcut box and enter whatever key combination you like. I use option-right arrow since they’re both lower right keys. This way you can now quickly pop open the slide-out notification tray while still typing. Great for glancing at emails.
Mountain Lion – Enable keyboard shortcut for Notification Center