Well, it is now official, Teradata has launched their Teradata OLAP Connector product which allows Microsoft Excel Pivot Tables to connect to a Teradata database.  Basically, you can define a virtual OLAP cube on top of your existing tables within a Teradata database and then use Excel Pivot Tables to do ad-hoc query and analysis on your data.  Excel connects to the Teradata Database using the MDX Query Language.  The really nice part of this solution is that all your data stays in Teradata and you get more options on how to analyze the data.  You get the full power of Excel Pivot Tables and you get the full analytics power of the Teradata database.  Teradata now supports both the SQL and MDX query languages!  You can read more here:

http://www.teradata.com/t/News-Releases/2010/Teradata-OLAP-Connector-Enriches-Direct-Excel-Connectivity-Enhancing-Enterprise-and-Real-time-Analytics/

http://www.simba.com/news/Simba-Builds-Custom-ROLAP-BI-Solution-for-Teradata.htm

http://cwebbbi.spaces.live.com/Blog/cns!7B84B0F2C239489A!7726.entry