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From SharePoint Thinks, Links and Clinks]
SQL Server Reporting Services (part of SQL Server 2005) is a very useful toolset to add to your tool kit as a SharePoint Developer, Engineer, Administrator, user, etc. SharePoint Web parts and the good old report center can leverage integration with SSRS to solve many business reporting needs.
Here are a few resources (not all) that you can use to bring you up to speed on using SSRS.
The article continues at
http://blogs.msdn.com/tadd/archive/2008/04/10/sql-server-reporting-services-tutorials-links-and-resources.aspx