For any of you out there that have embrased or at the very least attempted to embrase the SQL Server 2005 Reporting Services Modeling and Report Builder you should definitly check out the newest release of Report Builder.
Report Builder 2.0 offers many new features including the Tablix table formating, multiple data sets and data sources. Many of the features of Business Intelligence Studio’s Report Designer were also brought over allowing for any report to be opened not just those designed in Report Builder.
One thing to not is that Report Builder 1.0 is still the Click Once application and will continue until possibly the release of the next Service Pack or possibly not til Kilimanjaro (SQL Server 2010?). For now it is available as a standalone client install available for download here: http://www.microsoft.com/downloads/details.aspx?FamilyID=9f783224-9871-4eea-b1d5-f3140a253db6&DisplayLang=en