SQL Server 2005 Reporting Service(SSRS)

Here are some good technical articles on SSRS

1. Four part articles from Steve Joubert
Part 1: http://www.simple-talk.com/sql/learn-sql-server/beginning-sql-server-2005-reporting-services-part-1/
Part 2: http://www.simple-talk.com/sql/learn-sql-server/beginning-sql-server-2005-reporting-services-part-2/
Part 3: http://www.simple-talk.com/sql/learn-sql-server/beginning-sql-server-2005-reporting-services-part-3-the-chart-control/
Part 4: http://mail.simple-talk.com/sql/learn-sql-server/beginning-sql-server-reporting-services-part-4/

2. Two Part articles from Don Schlichting
Part 1: http://www.databasejournal.com/features/mssql/article.php/3573361
Part 2: http://www.databasejournal.com/features/mssql/article.php/3582241

3. MSDN Magazine article, Report Controls in SQL Server 2005 Reporting Services http://msdn.microsoft.com/msdnmag/issues/06/07/DataPoints/default.aspx