I had heard of this tool before, and it looks interesting if you ever need to document a full SQL Server 2005 solution. It apparently documents SSIS, SQL and SSAS as well as SSRS. The output shows data lineage, as well as the structure of your database. Worth a look, pretty affordable too. Too bad they couldn't make a version that worked as an add-on to Data Dude. Here is the link to their homepage.