Note To Myself: Taking Screenshots in Mac OS X

⌘-Shift-3 (Command-Shift-3): Take a picture of the entire screen and save as a file
⌘-Control-Shift-3 (Command-Control-Shift-3): Take a picture of the entire screen and copy to the clipboard
⌘-Shift-4 (Command-Shift-4): Take a picture of the dragged area and save as a file
⌘-Control-Shift-4 (Command-Control-Shift-4): Capture dragged area and copy to the clipboard
⌘-Shift-4 then Space bar (Command-Shift-4 then Space bar): Capture a window, menu, desktop icon, or the menu bar and save as a file
⌘-Control-Shift-4 then Space bar (Command-Control-Shift-4 then Space bar): Capture a window, menu, desktop icon, or the menu bar and copy to the clipboard
via MacDailyNews