More and more ITPros are looking for help in deciding between 64 bit and 32 bit boxes, often they are looking for evidence that 64 bit is worth the investment and worth the risk (of adopting a new platform).
This link http://www.microsoft.com/sql/64bit/productinfo/winhecdemo.mspx takes you to a compelling demo, delivered at the Microsoft WinHEC 2005 conference, which compares (graphically) the performance of SQL Server 2005 running on the 32-bit version of Windows Server 2003 compared with SQL Server 2005 running on Windows Server 2003, x64 Edition.
I want the tool they used in the performance demo at TechEd 2005. I was told it's Flash, but I don't know any more than that.
It is too cool!