If inserting a single row or column, you can eliminate another step by simply right-clicking the row or column's header cell - no need to select anything first.
To eliminate a few clicks, select the entire row (or column) by dragging over the header cells before right-clicking Excel will insert rows without displaying the Insert dialog. You can also right-click a selection, choose Insert, click the Entire Row (or Entire Column) option, and click OK.
