Ask HN: good looking "nerdy" t-shirts?

Hey HN, soon it'll be summer again and I'd love to stock up on shirts. Are there any places on the web for "well designed" nerdy shirts? I'd love to show a bit of geek pride and look decent at the same time. A bit of good typography/design never hurt anyone :)

I'm looking for the usual software engineering / science / ... theme and if possible a bit more on the minimalistic side rather than full prints.

In my case, the price for shipping to Germany is a relatively big factor, but no need to let your suggestion influence that.

As an example: New Relic's "data nerd" shirts seemed to look pretty decent, but I think they don't ship them anymore.