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Also Command("cloverleaf")-Shift-4 will allow you to capture only a rectangle of the screen that you select.
 
And the good news keeps coming, Command+Shift+4+Space Bar will let you select specific screen elements like a window or a menu. A big fat camera will pop up.
 
And to add to all of the above, since you asked about the print screen, to take a screenshot to clipboard instead of file:
cmd-ctrl-shift-3: Copy screen (just like prt scr)
cmd-ctrl-shift-4 then select by dragging out box: Copy selection
cmd-ctrl-shift-4 then hit spacebar and click on window: Copy window (just like alt-prt scr)
 
kaltsasa said:
And the good news keeps coming, Command+Shift+4+Space Bar will let you select specific screen elements like a window or a menu. A big fat camera will pop up.

lol, i didn't know this one. that is a hilariously large fat camera...
 
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