Elaborate your cubes with conditional formatting

SQL Server Analysis Services cubes have supported conditional formatting of measures since 2000. Now that Excel supports conditional formatting, they really are a "must have" to make some cubes more readable. For example, my PerfMon cube has the same “Value” measure, which could be “Bytes of Virtual Storage” or “Seconds per Read IO”. You really want to format the number depending on what it is. For example, a 9 digit number probably wants to be formatted as #,#, while a number of about 0.001 probably wants 6 significant digits.
This is all very easy with Analysis Services, simply put a condition on the FORMAT clause.