For those of you who do not like Report Builder as your end user tool for creating reports using Reporting Services, here's a tool that is supposed to be simpler, RSInteract. Hat Tip to Chris Web's BI Blog on this one.  However, I would dispute with Chris that Report Builder, in his words, "sucks".  My experience has been that end users like the gui, and the filtering options.  I would agree that the sorting is a bit confusing, and grouping is not in the banded approach I would prefer.  But our end users, coming from a different web based tool seem to like Report Builder.