I'm suprised no-one has mentioned Microstrategy. We do quite a bit of datawarehouse (11TB) work and microstrategy does a great job or generating SQL so the business users can get the data without bothering us. However it is a very expensive solutuion. if you don't need ad-hoc abilities and decide on crystal i recommend lookin into their VS2005 or Eclipse plugins which are "fre for production use".
