Reporting Services web parts on SharePoint page
Adding Report Builder web parts to SharePoint 2010 made the page colorful and intelligent, but the UI lacked a bit.
Access Denied for Visitors on a SharePoint Page with Reporting Services Webpart
If you are working in SharePoint 2010 and discover that users in the Visitors group or All Authenticated Users are unable to open pages that contain a Report Services web part with an Access Denied error.