InDesign Place shortcut

Here's a cool new feature of InDesign CS3: You've just chosen File > Place, and you have the "loaded" graphics cursor indicating that you have a graphic to place somewhere on your page. You know that if you click on an empty frame, the graphic will go into that frame. If you click outside of a frame, a new frame will be created to contain the graphic. But if you hold down the Option or Alt key and click on a frame that already contains a graphic, the existing graphic will be replaced with the new graphic. Sweet!