To take Reporting Services to the next level (I mean beyond static reports) – please look at Project REAL sample reports.
7. Sample SSRS reports
The "interactive" reporting services reports in Project REAL sample demonstrates a technique that allows the users to interactively "drill-down". This drill down capability is sometimes sufficient for most of your users – and you may not need to deploy something like Proclarity.
I hope this power gets leveraged!!!!