This one is flying under the radar -- Thought I'd publicize it a bit:
http://www.microsoft.com/downloads/details.aspx?FamilyID=D09C1D60-A13C-4479-9B91-9E8B9D835CDC&displaylang=en [Scroll to the very bottom]
"The Reporting Add-In for Microsoft Visual Web Developer 2005 Express includes a ReportViewer control, an integrated report designer, and a comprehensive API that lets you customize run-time functionality. You can use the control to add interactive real-time data reports to your ASP.NET Web applications. Reports can use data from any ADO.NET DataTable or custom Business object. You can create reports that combine tabular, matrix, and visual data in free-form or traditional report layouts. An integrated report designer is included so that you can create the custom reports that bind to the control."
To DL it directly: