If you will visit the Improving .NET Application Performance and Scalability: Home on GotDotNet.com, you can download their “Improving .NET Application Performance and Scalability“ PowerPoint presentation.
http://www.gotdotnet.com/Community/Workspaces/Workspace.aspx?id=540f8bd7-be95-45f7-a477-919d23294553
In the presentation they mention one of my all time favorite quotes:
“When you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot express it in numbers, your knowledge is of a meager and unsatisfactory kind; it may be the beginning of knowledge, but you have scarcely in your thoughts advanced to the state of science.“
- Lord Kelvin (William Thomson)
A little long for a shirt, maybe a poster or something.