If you're interested in BI solutions on the Microsoft platform and you have nothing better to do then you could do worse than readig a couple of whitepapers that I have recently encountered:
ETL Performance: Unisys and Microsoft SQL Server Speed Up The Process - Understand how 64-bit computing can dramatically increase performance of SSIS
Microsoft SQL Server 2005 and Visual Studio 2005 Customer Solution Case Study - Read about how Bank Leu are dramatically increasing user productivity and cutting implentatoin costs using SQL Server 2005.
Using SQL Server 2005 Integration Services in a Scalable Business Intelligence Solution - An article from the Microsoft IT Showcase series highlighting how MSFT have used SSIS to integrate data from its Siebel Call Centre Database.
-Jamie