The Pentaho BI Suite provides a full spectrum of business intelligence (BI) capabilities including query and reporting, interactive analysis, dashboards, ETL/data integration, data mining, and a BI platform that have made it the world's most popular open source BI suite. Pentaho's products are used by leading organizations including U.S. Naval Air Systems Command, Lifetime Networks, Terra Industries, Sun Microsystems, MySQL, and many others.
Pentaho Reporting

All organizations use reporting in one form or another. As a result, reporting is considered a core business intelligence need and often the first BI application deployed. Pentaho Reporting allows organizations to easily access, format, and deliver information to employees, customers, and partners.null

As a reporting and analysis guy, I have to say... this looks to be the first FOSS reporting package that is not totally without value other than PDF conversion, the one thing the other packages do for you. This Pentaho thing doesn't suck. All the others do. Strong endorsement by me.