Maybe the cargo pants. As for Thinkgeek t-shirts, they have sorta fallen from favor here in the engineering department--to start with, we've observed that the approach of such a shirt frequently proceeds the arrival of generally unpleasant body odors. They're still pretty big (XXXL in some cases) in the CS dept.

I was hoping for a FreeBSD daemon tshirt, but "Got Root" would work, too.