My reports deal with financial information. This is fast changing and very time sensitive. It is vital for our users to know exactly when the data they're looking at was last updated (especially if we're using extracts). The formatting of the time is not ideal for our use though.
For those reports that change on a day to day basis, we would like to just display the date and not the time.
Finally it might be good if the data update time can be used in a calculation to provide a warning message if updates have not happened in a while. So it would be good if data update time can also be exposed to simple calculated fields.