If you have to deal with boring spreadsheets on a daily basis, every tiny little trick that saves you time is worth it—and the Pointy Haired Dilbert blog runs down a whole list of useful tricks.
The list includes a bunch of very useful tips—for instance: if you want to resize a number of columns at once, you can simply select them and double-click on the separator to make Excel automatically resize those columns to the width of the content. Want to fill in a series of numbers or a formula all the way down a column? You can select the first few and double-click on the bottom right-hand corner of the selection to make it auto-fill all the way down—very useful tricks to save you time doing those boring TPS reports.
Hit the link for the full list of tricks, and animated illustrations of each.
Do you know these Double-click Tricks in Excel? [Pointy Haired Dilbert]