For fun, go here. Find my name and click on the link. I'm the one in the middle. Can you read what it says on my shirt? I wore the same shirt to JavaOne, and Pat Sueltz wasn't too pleased. I worked for her about ten years ago at IBM. That particular shirt doesn't have the same impact it once did - at that ApacheCon I had random strangers ask me (in jest, I presume) if I had a death wish. At the last O'Reilly Open Source Conference, people simply assumed that I was one of the many Microsofties in attendance. Someone even asked me if I was David Stutz.
That particular t-shirt suffered an unfortunate washing machine accident. So the next time I visited Redmond I bought two more. What do I typically wear when I visit Microsoft? My NetScape T-shirt, of course.