I posted this "10 Second T-Shirt Survey
" on T-ShirtCountdown.com back on December 5, 2005.
Over the years over 2000 individuals have filled out the survey, here's a link to the aggregated results
Here's a few pretty graphs of some of the questions. You can click on the thumbnails to view the full version of the graphs: What is your favorite type of t-shirt to wear?