I've just stumbled upon an odd issue with the Tablix control in SSRS 2008. I deployed a report on a server a few weeks ago and it is now reporting on enough data to make it span multiple pages. I wanted the column headings to appear on all pages, not just the first. However, when I set the RepeatColumnHeaders property on the Tablix to be true, the headings still did not appear on the next page.
In Reporting Services, formatting dates can become a headache for the developer, often due to differing regional settings on servers, development boxes etc. Therefore I've found it much more useful to force the report to use a particular format, rather than allow the server settings to decide for me. Previously I would have used FormatDateTime in the expression, as shown here:
=FormatDateTime(Fields!DateStamp.Value, DateFormat.ShortDate)
Depending on the regional settings, this could return either 12/3/2008 or 3/12/2008.