Dragging to Clear Cells

Want a really quick way to clear the cells in a range you’ve selected? If you’ve got a hold of the mouse, simply grab the fill handle (the small square at the bottom-right corner of the selection) and drag it back over the selection area. As you drag, the cells are grayed out, and when you release the mouse button the values in the cells are cleared.

If you also want to clear the formats in the cells, just hold down the Ctrl key as you drag the fill handle back over the selection.