A second solution to Don's problem from podcast 991: add a textbox inside the cell. With a bit of formatting, the words inside the textbox will appear to float next to the number, but will not cause any subsequent formulas to incorporate the text. Episode 992 shows you how.
This video is the podcast companion to the book, Learn Excel 97-2007 from MrExcel. Download a new two minute video every workday to learn one of the 377 tips from the book!