Reporting Services SP1 is installed, the installation went really well, and one feature that was in the beta is back: Excel "groups" (the plus/minus rollups in Excel). Believe it or not, this was one of the things that got my boss excited about Reporting Services as many of our managers are familiar with Excel, and when it dropped off in the RTM I had to go through and create some copies of reports specifically for an Excel export.
One strange thing is that there seems to be at least two means of creating expandable groups/hiding report items in the designer,...