Here's a handy keyboard shortcut I picked up recently while visiting the InDesign User Group in Orlando, FL. When using the Free Transform tool to resize an object, you probably all know that you can hold the Shift key while dragging a handle to resize the object proportionately, but did you know that you can also hold down the Option key to affect all handles at once? Please allow me to illustrate.
Without the Option key:
*With* the Option key:
Oh yeah, quite handy indeed :)